May is the fifth month of the year in the Gregorian Calendar. It has 31 days.
Births[]
- May 1 — Sergey Lozovoi is born in 1965.
- May 2 — Isaac Heller is born in 1809.
- May 2 — William Paul Thompson is born in 1938.
- May 2 — Brian Alpress Hunt is born in 1949.
- May 2 — Lindsey Robert Rose is born in 1955.
- May 2 — Eric Napoletano is born in 1965.
- May 2 — Zhang Youtian is born in 1968.
- May 2 — Rio Alex Bulo is born in 1978.
- May 3 — Rubén Millatureo Vargas is born in 1962.
- May 3 — Ronald Lee Moore is born in 1967.
- May 3 — Eric Matthews is born in 1974.
- May 4 — Marvin Irvin is born in 1949.
- May 4 — Honoré Zanchi is born in 1962.
- May 4 — Karla Homolka is born in 1970.
- May 5 — Sophie Ursinus is born in 1760.
- May 5 — George Frank Sack is born in 1892.
- May 5 — William Dale Archerd is born in 1912.
- May 5 — Zaven Almazyan is born in 1950.
- May 5 — Elvira Yegorycheva is born in 1962.
- May 5 — Lucho Plátano is born in 2002.
- May 6 — Martha Beck is born in 1920.
- May 6 — Ansis Kaupēns died in 1927.
- May 6 — Werner Boost is born 1928.
- May 6 — David Carpenter is born in 1930.
- May 6 — Kim Hae-sun is born in 1969.
- May 6 — Sibusiso Duma is born in 1984.
- May 7 — Tony Garcia is born in 1954.
- May 7 — Tracy Housel is born in 1958.
- May 7 — Dale Scheanette is born in 1973.
- May 8 — Johann Oberreiter is born in 1807.
- May 8 — Christine Freund (victim) is born in 1950.
- May 8 — Danny Barber is born in 1955.
- May 8 — Jaroslav Stodola is born in 1966.
- May 9 — Carroll Cole is born in 1938.
- May 9 — Arthur Ream is born in 1949.
- May 9 — Wayne Henley is born in 1956.
- May 9 — Tammie Liles (victim) is born in 1967.
- May 9 — Christopher Lovrien is born in 1967.
- May 10 — Charles Duffy is born in 1976.
- May 10 — Cory Morris is born in 1978.
- May 10 — Ludivine Chambet is born in 1983.
- May 11 — Daniel Conahan is born in 1954.
- May 11 — Kimberly McCarthy is born in 1961.
- May 11 — Donald Piper is born in 1961.
- May 11 — Sergey Chyorny is born in 1977.
- May 12 — Earle Nelson is born in 1897.
- May 12 — John Edward Swindler is born in 1944.
- May 12 — Isabel Cristina Torreão Pires da Silveira is born in 1961.
- May 12 — Clinton Bankston is born in 1971.
- May 12 — Alexander Hernandez is born in 1980.
- May 13 — Donald Beardslee is born in 1943.
- May 13 — Waneta Hoyt is born in 1946.
- May 13 — Sid Ahmed Rezala is born in 1979.
- May 14 — Timothy McCoy (victim) is born in 1955.
- May 14 — Dorángel Vargas is born in 1957.
- May 14 — David Morton is born in 1959.
- May 14 — Andrew Six is born in 1965.
- May 14 — Mykhailo Feskiv is born in 1977.
- May 15 — Samuel Herbert Dougal is born in 1847.
- May 15 — Robert Liberty is born in 1947.
- May 15 — Milton Johnson is born in 1950.
- May 16 — H. H. Holmes is born in 1861.
- May 16 — John Benjamin Kennedy Jr. is born in 1955.
- May 16 — David Bruce is born in 1963.
- May 16 — Themba Sukude is born in 1974.
- May 17 — Rebecca Smith is born in 1807.
- May 17 — John Dickman is born in 1864.
- May 17 — William Zamastil is born in 1952.
- May 17 — Beoria Simmons is born in 1954.
- May 17 — Michael Cox is born in 1957.
- May 17 — Sergey Shipilov is born in 1959.
- May 17 — Levi Bellfield is born in 1968.
- May 17 — Marcelo Fabián Gómez is born in 1980.
- May 17 — David Lefèvre is born in 1980.
- May 18 — Harvey Carignan is born in 1927.
- May 18 — Milka Pavlović died in 1935.
- May 18 — Samuel Evans is born in 1938.
- May 18 — Bill Bradford is born in 1946.
- May 18 — Sue Curtis (victim) is born in 1960.
- May 18 — Yegor Khabarov is born in 1979.
- May 19 — Albert Fish is born in 1870.
- May 19 — Roger Epperson is born in 1950.
- May 19 — Robert Alston is born in 1969.
- May 19 — Wiesław Wiszniewski is born in 1971.
- May 19 — Wesley Brownlee is born in 1979.
- May 20 — Yiya Murano is born in 1930.
- May 20 — Mohammed Bijeh is born in 1970.
- May 20 — Efraín Sarmiento Cuero is born in 1996.
- May 21 — Marceline Harvey is born in 1938.
- May 21 — Roger Kibbe is born in 1939.
- May 21 — Douglas Gretzler is born in 1951.
- May 21 — Robert Edwards is born in 1955.
- May 21 — Horace Vaultz is born in 1955.
- May 21 — Jeffrey Dahmer is born in 1960.
- May 22 — Ted Kaczynski is born 1942.
- May 22 — Kenneth Bianchi is born in 1951.
- May 22 — Lam Kor-wan is born in 1955.
- May 22 — Carol Christensen (victim) is born in 1961.
- May 22 — Todd Alan Reed is born in 1967.
- May 22 — Irina Gaidamachuk is born in 1972.
- May 22 — Juan David Ortiz is born in 1983.
- May 22 — Carlos Yadiel Baez-Nieves is born in 1999.
- May 23 — Richard Chase is born in 1950.
- May 23 — Catherine Birnie is born in 1951.
- May 23 — Cheryl Wims (victim) is born in 1964.
- May 24 — Hilda Nilsson is born in 1876.
- May 24 — Fritz Erbe and Dorothee Buntrock died in 1893.
- May 24 — Monte Merz is born in 1911.
- May 24 — Francisco García Escalero is born in 1948.
- May 24 — Lorenzo Gilyard is born in 1950.
- May 24 — Matthew Steven Johnson is born in 1963.
- May 24 — Frank Gust is born in 1969.
- May 25 — Ludvík Černý is born in 1965.
- May 26 — Peter Kürten is born in 1883.
- May 26 — Charles E. Terry is born in 1930.
- May 26 — Harold Bell is born in 1939.
- May 26 — Danny Rolling is born in 1954.
- May 26 — Anthony Joyner is born in 1962.
- May 26 — Andrei Yurkin is born in 1970.
- May 26 — Susan Ibrahim is born in 1971.
- May 27 — Thomas Neill Cream is born in 1850.
- May 27 — Robert Lee Yates is born in 1952.
- May 27 — Wayne Williams is born in 1958.
- May 28 — Thomas Henry McMonigle is born in 1914.
- May 28 — Gary Don Franklin is born in 1946.
- May 28 — Paul Eugene Rowles is born in 1948.
- May 29 — Bevan von Einem is born in 1946.
- May 29 — Somkid Pumpuang is born in 1964.
- May 29 — Lorenzo Montoya is born in 1967.
- May 29 — Marcos Antunes Trigueiro is born in 1978.
- May 30 — Märt Ringmaa is born in 1938.
- May 30 — John Paul Phillips is born in 1953.
- May 30 — John Edward Brewer is born in 1958.
- May 30 — DeAngelo Martin is born in 1985.
- May 31 — Anthony Hardy is born in 1951.
- May 31 — Martin Lee Sanders is born in 1952.
- May 31 — Ian McLoughlin is born in 1958.
- ? — Dennis Dilda is born in 1860.
- ? — Sukhwinder Dhillon is born in 1959.
- ? — Cai Bin is born in 1973.
- ? — Dmitry Medvedev is born in 1981.
Deaths[]
- May 1 — Major Lisenba died in 1942.
- May 2 — Walter Hill died in 1997.
- May 2 — "Bas-Congo Throatcutter" died in 2000.
- May 3 — Joseph Kondro died in 2012.
- May 4 — Thomas Jeffries died in 1826.
- May 4 — Louis Philippe is born in 1910.
- May 4 — He Tiandai died in 2016.
- May 5 — Dmitry Medvedev died in 2002.
- May 5 — Clarence Victor died in 2015.
- May 5 — Marie Noe died in 2016.
- May 6 — Ansis Kaupēns died in 1927.
- May 6 — Dagmar Overbye died in 1929.
- May 6 — Adolfo Constanzo died in 1989.
- May 6 — Earl Richmond died in 2005.
- May 6 — Abdelaâli Hadi died in 2022.
- May 7 — H. H. Holmes died in 1896.
- May 7 — Lois Jurgens died in 2013.
- May 8 — J. Frank Hickey died in 1922.
- May 8 — Majid Salek Mahmoudi died in 1985.
- May 9 — János Rumpf died in 1914.
- May 9 — Stanley Buckowski died in 1952.
- May 10 — Heinrich Götti died in 1865.
- May 10 — Minnie Wallace Walkup died in 1957.
- May 10 — John Wayne Gacy died in 1994.
- May 10 — Ershad Sikder died in 2004.
- May 10 — Simon Rochford died in 2006.
- May 10 — Bernard Pesquet died in 2009.
- May 10 — Michel Fourniret died in 2021.
- May 11 — Patty Cannon died in 1829.
- May 11 — Juan Díaz de Garayo died in 1881.
- May 11 — Stanislas Walezewsky died in 1947.
- May 11 — Winford Stokes died in 1990.
- May 11 — Terry Blair died in 2024.
- May 12 — Tony Costa died in 1974.
- May 12 — Dimitris Vakrinos died in 1997.
- May 12 — Matej Čurko died in 2011.
- May 12 — William MacDonald died in 2015.
- May 12 — Dennis Nilsen died in 2018.
- May 13 — Michael Ross died in 2005.
- May 14 — Frederick Hollman died in 1897.
- May 14 — Hsu Tung-chih died in 1984.
- May 14 — Hu Dejun & Zhang Liming are executed by firing squad in 2010.
- May 15 — William A. Renfroe died in 1931.
- May 15 — Cletus Reese died in 1966.
- May 15 — Susumu Nakayama died in 2014.
- May 15 — Ian Brady died in 2017.
- May 16 — Lydia Sherman died in 1878.
- May 16 — Kampatimar Shankariya died in 1979.
- May 16 — Gayno Smith died in 2005.
- May 17 — Władysław Baczyński died in 1960.
- May 17 — Joseph Taborsky died in 1960.
- May 17 — Louis Philippe died in 1990.
- May 17 — Girvies Davis died in 1995.
- May 18 — Edward H. Rulloff died in 1871.
- May 18 — Vernon Brown died in 2005.
- May 18 — Lao Rongzhi died in 2023.
- May 18 — Agustín Ramón Martínez died in 2024.
- May 19 — Sante Kimes died in 2014.
- May 20 — Bobby Jack Fowler died in 2006.
- May 20 — Jerry Fletcher died in 2014.
- May 21 — Gregory Breeden died in 2014.
- May 22 — Boris Bogdanov died in 1995.
- May 22 — Roy Melanson died in 2020.
- May 23 — Frederick Deeming died in 1892.
- May 23 — Adolf Seefeldt died in 1936.
- May 23 — Bobby Joe Long died in 2019.
- May 23 — Shavkat Shayakhmedov died in 2023.
- May 24 — Herman Billik died in 1917.
- May 24 — Stephen McCoy died in 1989.
- May 24 — Roger St. John died in 1995.
- May 25 — Marcel Petiot died in 1946.
- May 25 — Paweł Tuchlin died in 1987.
- May 25 — Andrea Arrigoni died in 2005.
- May 26 — Thomas W. Piper died in 1876.
- May 27 — Charles Rodman Campbell died in 1994.
- May 27 — Ensio Koivunen died in 2003.
- May 27 — Thomas Whisenhant died in 2010.
- May 28 — Antonio Nardello died in 1886.
- May 28 — Stanisław Zboński died in 1925.
- May 28 — David Parker Ray died in 2002.
- May 28 — Eddie Mosley died in 2020.
- May 28 — David Brooks died in 2020.
- May 29 — Vender Duncan died in 1959.
- May 29 — Posteal Laskey Jr. died in 2007.
- May 30 — Robert George Clements died in 1947.
- May 30 — Miyuki Ishikawa died in 1987.
- May 31 — Lee Roy Martin died in 1972.
- May 31 — Sokichi Furutani died in 1985.
- May 31 — John Baughman died in 2000.
- May 31 — William Pierce died in 2020.
- May 31 — Robert Pickton died in 2024.
- ? — Roland Kübler died in 2017.
Captures[]
- May 1 — Roger Herbert Haglund is apprehended in 1993.
- May 1 — Vladimir Mukhankin is apprehended in 1995.
- May 2 — Gregory Clepper is apprehended in 1996.
- May 2 — Edward George McGregor is apprehended in 2006.
- May 3 — Daniel Camargo Barbosa is apprehended in 1974.
- May 3 — Carlton Gary is apprehended in 1984.
- May 4 — Andre Jones is apprehended in 1979.
- May 4 — David Morton is apprehended in 1990.
- May 4 — Kenneth McDuff is apprehended in 1992.
- May 4 — Aladár Donászi is apprehended in 1994.
- May 4 — Edson Izidoro Guimarães is apprehended in 1999.
- May 4 — Dishon Muturi Nderi is apprehended in 2020.
- May 4 — Carlos Dominguez is apprehended in 2023.
- May 6 — Anjette Lyles is apprehended in 1958.
- May 6 — Faryion Wardrip is apprehended in 1986 (murder of Tina Kimbrew).
- May 6 — Sara Aldrete is apprehended in 1989.
- May 6 — Elton Manning Jackson is apprehended in 1997.
- May 6 — Donato Bilancia is apprehended in 1998.
- May 6 — Matija Sovdat is apprehended in 1998.
- May 6 — Yanis Baltass is apprehended in 2004.
- May 6 — Michael Penttilä is apprehended in 2018.
- May 6 — Clark Perry Baldwin is apprehended in 2020.
- May 7 — Manuel Pardo is apprehended in 1986.
- May 7 — Hugo Osorio Chávez is apprehended in 2021.
- May 8 — Jeanne Weber is apprehended in 1908.
- May 8 — Yuri Ustimenko is apprehended in 2002.
- May 9 — Ramiro Artieda is apprehended in 1939.
- May 9 — Zhang Yongming is apprehended in 2012.
- May 11 — Randy Gay is apprehended in 2011.
- May 11 — Dellen Millard is apprehended in 2013.
- May 12 — James Koedatich is apprehended in 1983.
- May 13 — Lester Brockelhurst is apprehended in 1937.
- May 13 — Velma Barfield is apprehended in 1978.
- May 14 — Kiyoshi Ōkubo is apprehended in 1971.
- May 14 — David Carpenter is apprehended in 1981.
- May 14 — Randy Kraft is apprehended in 1983.
- May 14 — Trent Benson is apprehended in 2007.
- May 14 — Yegor Khabarov is apprehended in 2009.
- May 15 — Erno Soto is apprehended in 1974.
- May 15 — Mahin Qadiri is apprehended in 2009.
- May 15 — Cleber de Souza Carvalho is apprehended in 2020.
- May 15 — Andrés Mendoza is apprehended in 2021.
- May 15 — José Quevedo is apprehended in 2023.
- May 16 — Boris Gusakov is apprehended in 1968.
- May 16 — Edmund Kolanowski is apprehended in 1983.
- May 16 — Valdek Laas is apprehended in 1997.
- May 16 — Ali Akbar Khorramdin and Iran Mousavi Sani are apprehended in 2021.
- May 17 — Eddie Mosley is apprehended in 1987.
- May 17 — Henry Eugene Hodges is apprehended in 1990.
- May 17 — Samuel Dixon is apprehended in 2001.
- May 17 — Sergei Dovzhenko is apprehended in 2002.
- May 17 — Diane O'Dell is apprehended in 2003.
- May 17 — Felix Vail is apprehended in 2013.
- May 18 — Emil Schutte is apprehended in 1921.
- May 18 — Montie Rissell is apprehended in 1977.
- May 18 — Laron Williams is apprehended in 1981.
- May 18 — Michael Lupo is apprehended in 1986.
- May 18 — Eugene Broxton is apprehended in 1991.
- May 18 — Sanjay Sharma is apprehended in 2000.
- May 19 — Stanley Buckowski is apprehended in 1950.
- May 19 — Andreas Bichel is apprehended in 1808.
- May 19 — Wayne Boden is apprehended in 1971.
- May 19 — José Antonio Rodríguez Vega is apprehended in 1988.
- May 19 — Su Hong is apprehended in 2010.
- May 19 — José Jurado Montilla is apprehended in 2024.
- May 20 — Eric Matthews is apprehended in 1998.
- May 20 — Robert Wagner is apprehended in 1999.
- May 21 — John Wesley Robinson is apprehended (final time) in 1913.
- May 21 — Frederick Cox is apprehended in 1997.
- May 21 — Igor Yuferev is apprehended in 1997.
- May 21 — John Bunting is apprehended in 1999.
- May 21 — Sherzod Zakirov is apprehended in 2009.
- May 22 — Eddie Leonski is apprehended in 1942.
- May 22 — Richard Cottingham is apprehended in 1980.
- May 22 — Jiří Straka is apprehended in 1985.
- May 22 — Arthur Gatter is apprehended in 1990.
- May 22 — Ivan Milat is apprehended in 1994.
- May 22 — Mark Smich is apprehended in 2013.
- May 23 — James Miller is apprehended in 1979.
- May 23 — David Van Dyke is apprehended in 1980.
- May 23 — Carl Watts is apprehended in 1982.
- May 23 — Agustín Ramón Martínez is apprehended in 2018.
- May 24 — Peter Kürten is apprehended in 1930.
- May 24 — Pedro Rodrigues Filho is apprehended in 1973.
- May 24 — Tony Lee Walker is apprehended in 1992.
- May 24 — Leslie Allen Williams is apprehended in 1992.
- May 24 — Chen Yongfeng is apprehended in 2003.
- May 24 — Dmitry Voronenko is apprehended in 2007.
- May 24 — Stephen Griffiths is apprehended in 2010.
- May 24 — Serhiy Steblyakov is apprehended in 2010.
- May 24 — Douglas Thomas is apprehended in 2022.
- May 25 — Stanley Rice is apprehended in 1968.
- May 25 — Jerry Brudos is apprehended in 1969.
- May 25 — Roman Kobyzev is apprehended in 2014.
- May 25 — Heather Pressdee is apprehended in 2023.
- May 25 — Karim Salim is apprehended in 2024.
- May 26 — Juan Corona is apprehended in 1971.
- May 26 — Stephen Wayne Anderson is apprehended in 1980.
- May 26 — Mauricio Silva is apprehended in 1984.
- May 26 — Robert Dean Weeks is apprehended in 1987.
- May 27 — Gary Evans is apprehended in 1998.
- May 27 — Derrick Todd Lee is apprehended in 2003.
- May 27 — James Fairweather is apprehended in 2015.
- May 27 — Stewart Weldon is apprehended in 2018.
- May 27 — Carloes Andrés Rivera is apprehended in 2024.
- May 28 — Robert Nixon is apprehended in 1938.
- May 28 — Nikolai Chigirinsky is apprehended in 2009.
- May 29 — Otokosaburo Noguchi is apprehended in 1905.
- May 29 — Louis Craine is apprehended in 1987.
- May 29 — Andre Luiz Cassimiro is apprehended in 1996.
- May 29 — Nicolai Bonner is apprehended in 2005.
- May 29 — Kim Hak-bong is apprehended in 2016.
- May 29 — José Tiago Soroka is apprehended in 2021.
- May 29 — Raul Meza is apprehended in 2023.
- May 30 — Robert Frederick Carr is apprehended in 1976.
- May 30 — Richard Rogers is apprehended in 2001.
- May 30 — Amarjeet Sada is apprehended in 2007.
- May 31 — Joseph Akin is apprehended in 1991.
- ? — J. Frank Hickey is apprehended 1912.
- ? — Lyda Southard is apprehended in 1921.
- ? — William MacDonald is apprehended in 1963.
- ? — Joachim Knychała is apprehended in 1982.
- ? — Mikhail Makarov is apprehended in 1986.
- ? — Robert Napper is apprehended in 1994.
- ? — Donald Broadnax is apprehended in 1996.
- ? — Yevgeny Nagorny is apprehended in 1998.
- ? — "Bas-Congo Throatcutter" is apprehended in 2000.
- ? — Ynobe Matthews is apprehended in 2000.
- ? — Nasser Kara is apprehended in 2002.
- ? — Chen Jui-chin is apprehended in 2003.
- ? — William Devin Howell is apprehended in 2005.
- ? — Larry D. Hubbard is apprehended in 2007.
- ? — Chandrakant Jha is apprehended in 2007.
- ? — Betty Neumar is apprehended in 2008.
- ? — Polatbay Berdaliyev is apprehended in 2012.
- ? — Abduseit Ormanov is apprehended in 2012.
- ? — Vladimir Kolebin is apprehended in 2014.
- ? — David Virgulák is apprehended in 2015.
- ? — Richard Bradley is apprehended in 2021.
- ? — Michael Coleman is apprehended in 2023.
- ? — Monu Kumar is apprehended in 2024.
Victims Murdered[]
- May 1 — Georgia Weckler is allegedly murdered by Ed Gein in 1947 (suspected victim).
- May 1 — Suzanne Korcz is murdered by Tommy Lynn Sells in 1987.
- May 1 — Shannan Gilbert is allegedly murdered by the "Long Island Serial Killer" in 2010 (suspected victim).
- May 2 — Gesche Margarethe Timm is murdered by Gesche Gottfried in 1815.
- May 2 — Regina Harrison is murdered by Jack Jones in 1983.
- May 2 — Audrey Gygi is murdered by Frank A. Walls in 1987.
- May 2 — Park Eun-joo is murdered by Lee Choon-jae in 1987.
- May 2 — Norman J. Sirnic and Karen Sirnic are murdered by Ángel Reséndiz in 1999.
- May 3 — Thomas Britland is murdered by Mary Ann Britland in 1886.
- May 3 — Carol Ann Christensen is murdered by Gary Ridgway in 1983.
- May 3 — Paul J. Cowart is murdered by Ray and Faye Copeland in 1989 (possibly killed on May 4).
- May 3 — Nancy Kitzmiller is murdered by the "I-70 Killer" in 1992.
- May 3 — Charlotte Trego is murdered by Neal Falls in 2014.
- May 4 — Janelle Cruz is murdered by Joseph DeAngelo in 1986.
- May 4 — Suzanne Denise Harrison, Bryan Drew Boone and Gena Lee Turner is murdered by Jerry McFadden in 1986.
- May 4 — Milton Joseph Bradley is murdered by Gary Ray Bowles in 1994.
- May 4 — Casonya Crawford is murdered by Anthony Kirkland in 2006.
- May 5 — Jeanette McClelland is murdered by Montie Rissell in 1977.
- May 5 — Cécile Bloch is murdered by François Vérove in 1986.
- May 5 — Mananya Thumpong is murdered by Michel Fourniret in 2001.
- May 5 — Kim Hee-sun is murdered by Yoo Young-chul in 2004.
- May 5 — Elikutty is murdered by K P Jayanandan in 2005.
- May 6 — Manfred Grassmann is murdered by Jürgen Bartsch in 1966.
- May 6 — Roberta Kathleen Parks is murdered by Ted Bundy in 1974.
- May 6 — Lynette Dawn Culver is murdered by Ted Bundy in 1975.
- May 6 — Mirosława Sarnowska is murdered by Joachim Knychała in 1976.
- May 6 — Monica Jack is murdered by Gary Handlen in 1978.
- May 6 — Tina Kimbrew is murdered by Faryion Wardrip in 1986.
- May 6 — Debra Anne Stevens is murdered by Frank Duane Welch in 1987.
- May 7 — Michael Edward Raney is murdered by David Meirhofer in 1968.
- May 7 — Mary Ann Pesce and Anita Mary Luchessa are murdered by Ed Kemper in 1972.
- May 7 — Sarah Blessing is murdered by the "I-70 Killer" in 1992.
- May 7 — Shin Min-a is murdered by Yoo Young-chul in 2004.
- May 8 — Bogusława Ludyga is murdered by Joachim Knychała in 1982.
- May 8 — Terry Lee Gambrel is murdered by Randy Kraft in 1983.
- May 9 — Margaret J. Miller is allegedly murdered by Lorenzo Gilyard in 1982 (suspected victim).
- May 9 — Leah Evans is murdered by Joel Rifkin in 1993.
- May 9 — Kim Hyun-jin is murdered by Jeong Nam-gyu in 2004.
- May 10 — Johanna Gottfried is murdered by Gesche Gottfried in 1815.
- May 10 — Shirley Robinson is murdered by Fred West in 1978.
- May 10 — Lawrence Eugene Sharp is murdered by William Bonin in 1980.
- May 11 — Tialda Visser is murdered by Koos Hertogs in 1979.
- May 11 — William Barrett is allegedly murdered by Wayne Williams in 1981 (suspected victim).
- May 12 — Dzung Ngoc Tu is murdered by Michael Ross in 1981.
- May 12 — Lisa Strong is allegedly murdered by Paul Rhoades in 1986 (suspected victim).
- May 12 — Sherry Palmer is allegedly murdered by Robert Lee Yates in 1992 (suspected victim).
- May 12 — Melody Ann Murfin is murdered by Robert Lee Yates in 1998.
- May 13 — Elise Schmidt is murdered by Gesche Gottfried in 1827.
- May 13 — Charles Hattula is allegedly murdered by John Wayne Gacy in 1978 (suspected victim).
- May 13 — Ngeun Thi Long is murdered by Bobby Joe Long in 1984.
- May 13 — Alverson Carter Jr. is murdered by Gary Ray Bowles in 1994.
- May 14 — Mary Dixon is murdered by Mary Ann Britland in 1886.
- May 14 — Lyudmila Andaralova is murdered by Gennady Mikhasevich in 1971.
- May 14 — Randall Reffett and Sam Stapleton are murdered by John Wayne Gacy in 1976.
- May 14 — Terry Lee Gambrel is murdered by Randy Kraft in 1983.
- May 14 — Bill Doi is murdered by Richard Ramirez in 1985.
- May 14 — Phyllis Payne is murdered by Billy Chemirmir in 2016.
- May 14 — Merly Andrea Rengifo Cuadros is allegedly murdered by Efraín Sarmiento Cuero in 2023 (suspected victim).
- May 15 — Beta Schmidt is murdered by Gesche Gottfried in 1827.
- May 15 — Louis Juncken is murdered by Martha Needle in 1894.
- May 15 — Donna Payant is murdered by Lemuel Smith in 1981.
- May 15 — Lorraine Borowski is murdered by the "Ripper Crew" in 1982.
- May 15 — Christine Gallegos is allegedly murdered by Paul Rhoades in 1985 (suspected victim).
- May 15 — Kathy Brisbois is allegedly murdered by Robert Lee Yates in 1990 (suspected victim).
- May 15 — Leslie Lizet Basilio is murdered by Keith Gibson in 2021.
- May 16 — Henry Gein is allegedly murdered by Ed Gein in 1944 (suspected victim).
- May 16 — Vera Millward is murdered by Peter Sutcliffe in 1978.
- May 16 — Michael Joseph Albanese is murdered by Charles Albanese in 1981.
- May 16 — Tammy Rothganger is murdered by Martin Priest in 1984.
- May 16 — Joanna Parrish is murdered by Michel Fourniret in 1990.
- May 16 — Michael Allen Lyons is murdered by Robert Boyd Rhoades in 1996.
- May 16 — Céline Saison is murdered by Michel Fourniret in 2000.
- May 17 — Elizabeth Anne Porteous is murdered by Wayne Boden in 1971.
- May 17 — Anastasiya Rahula is murdered by Gennady Mikhasevich in 1975.
- May 17 — Martyn Duffey is murdered by Dennis Nilsen in 1980.
- May 17 — Artur Frolkov and Atso Simovich are murdered by Sergei Dovzhenko in 2002.
- May 17 — Patricia "Trish" McDermott is murdered by Juan Covington in 2005.
- May 18 — Adelheid Gottfried is murdered by Gesche Gottfried in 1815.
- May 18 — Eric Middlebrooks is allegedly murdered by Wayne Williams in 1980 (suspected victim).
- May 18 — Richard Bruce is murdered by Larry Eyler in 1983.
- May 18 — Anne Lock is murdered by John Duffy and David Mulcahy in 1986.
- May 18 — Albert Morris is murdered by Gary Ray Bowles in 1994.
- May 19 — Annie Lucille Dedmond is murdered by Lee Roy Martin in 1967.
- May 19 — Lovie Williams is murdered by Leroy Snyder in 1969.
- May 19 — Joanna Messina is murdered by Robert Hansen in 1980.
- May 19 — Sean Paige King is allegedly murdered by William Bonin in 1980 (suspected victim).
- May 19 — Blanca Isela Arreola Guerrero is murdered by Michael Sharp in 1982.
- May 19 — David Andrew Spears is murdered by Aileen Wuornos in 1990.
- May 20 — Leola Douglas is murdered by Anthony Kirkland in 1987.
- May 20 — Ricky Beeks (Raymond Lamont Smith) is murdered by Jeffrey Dahmer in 1990.
- May 20 — Loretta Lewis is murdered by the "Jeff Davis 8" in 2005.
- May 20 — Paula Leclair is murdered by Camille Cléroux in 2010.
- May 20 — Jesse Fraga is allegedly murdered by Raul Meza in 2023 (suspected victim).
- May 21 — Johnny Delome and Billy Baulch are murdered by Dean Corll in 1972.
- May 21 — Elissa Naomi Keller is murdered by Cleophus Prince Jr. in 1990.
- May 21 — Suzanne Blamires is murdered by Stephen Griffiths in 2010.
- May 21 — Gerhard Hintermeier and Erna Hintermeier are murdered by Dariusz Kotwica in 2015.
- May 22 — Nathaniel Cater is murdered by Wayne Williams in 1981.
- May 22 — Martina Theresa Authorlee is murdered by Gary Ridgway in 1983.
- May 22 — Charles Gunnar is murdered by Leonard Lake and Charles Ng in 1983.
- May 22 — Zhang Jing is murdered by Gao Chengyong in 2001.
- May 23 — Linda Sutton is murdered by the "Ripper Crew" in 1981.
- May 23 — Cheryl Lee Wims is murdered by Gary Ridgway in 1983.
- May 23 — Elaine Shereika is murdered by Alexander Wayne Watson in 1988.
- May 23 — Chang Lin is murdered by Gao Chengyong in 2001.
- May 24 — Christa Naujoks is murdered by Beate Schmidt in 1990.
- May 24 — Tony Hughes is murdered by Jeffrey Dahmer in 1991.
- May 24 — Datrell Woods is murdered by Ronald Dominique in 2003.
- May 25 — Mitsuko Miyazaki is murdered by Yoshio Kodaira in 1945.
- May 25 — Luke Tredway is murdered by Douglas Wright in 1984.
- May 25 — Anna Lopez is murdered by Joel Rifkin in 1992.
- May 25 — Stephen Griffiths's victim, Suzanne Blamires, is found in 2010.
- May 26 — Willie Whiteling is murdered by Sarah Whiteling in 1888.
- May 26 — Israel Dunham is murdered by Jane Toppan in 1895.
- May 26 — Laura Sue Benjamin is murdered by Thor Nis Christiansen in 1979.
- May 26 — Sue Luna is murdered by Robert Hansen in 1982.
- May 26 — Verna Patricia Williams is murdered by Michael Hughes in 1986.
- May 26 — Bai Jie is murdered by Gao Chengyong in 1988.
- May 27 — Patricia Jones is murdered by Sharon Kinne in 1960.
- May 27 — Brenda Joy Baker is allegedly murdered by Ted Bundy in 1974 (suspected victim).
- May 27 — Michelle Denise Simms is murdered by Bobby Joe Long in 1984.
- May 27 — Konerak Sinthasomphone is murdered by Jeffrey Dahmer in 1991.
- May 28 — Thomas Glen Lundgren is allegedly murdered by William Bonin in 1979 (suspected victim).
- May 28 — Sharon Taylor is murdered by Gregory Brazel in 1990.
- May 29 — David Hilligiest and Malley Winkle are murdered by Dean Corll in 1971.
- May 29 — Leesa Jo Shaner is murdered by William Zamastil in 1973.
- May 29 — Diane Sue Gilchrist is murdered by Warren Forrest in 1974.
- May 29 — Shui Mak is murdered by the "Ripper Crew" in 1982.
- May 29 — John Ingram Bradenburg is murdered by Larry Eyler in 1983.
- May 29 — Vernita Wheat is murdered by Alton Coleman and Debra Brown in 1984.
- May 29 — Mabel "Ma" Bell is murdered by Richard Ramirez in 1985.
- May 30 — Susan Margarite Davis and Elizabeth Perry is allegedly murdered by Ted Bundy in 1969 (suspected victim).
- May 30 — Hardee Schmidt is murdered by Sean Vincent Gillis in 1999.
- May 30 — Kim Young-soon is murdered by Jeong Nam-gyu in 2005.
- May 31 — Gloria Nadine Knutson is murdered by Warren Forrest in 1974.
- May 31 — Yvonne Jolene McFaddin is murdered by John Benjamin Kennedy Jr. in 1978.
- May 31 — Yvonne "Shelly" Antosh is murdered by Gary Ridgway in 1983.
- May 31 — Shari Smith is murdered by Larry Bell in 1985.
- May 31 — Charles Edmund Carskaddon is murdered by Aileen Wuornos in 1990.
- ? — Sarah Dylan is murdered by Joseph Naso in 1992.
- ? — Manuel Reed is murdered by Ronald Dominique in 1999.
- ? — Dana Nicole Lowrey is murdered by Shawn Michael Grate in 2006.
- ? — Whitnei Dubois is murdered by the "Jeff Davis 8" in 2007.
- ? — Crystal Dozier is murdered by Anthony Sowell in 2007.
- ? — Laconia "Muggy" Brown is murdered by the "Jeff Davis 8" in 2008.
Other Events[]
- May 1 — William Bonin's victim, Darin Kendrick is found in 1980.
- May 2 — Gary Ridgway's victim, Maureen Sue Feeney, is found in 1986.
- May 3 — Ronald Janssen's victim, Annick Van Uytsel, is found in 2007.
- May 5 — Jerry McFadden's victim, Suzanne Denise Harrison, is found in 1986.
- May 5 — Leonard Christopher is arrested for being the "Frankford Slasher" in 1990.
- May 6 — John Wayne Gacy meet with First Lady Rosalynn Carter in 1978.
- May 7 — Larry Eyler's victim, David M. Block, is found in 1984.
- May 7 — Shawn Michael Grate is convicted of murder in 2018.
- May 8 — Gary Ridgway's victim, Carol Ann Christensen, is found in 1983.
- May 9 — Warren Forrest's victim, Gloria Nadine Knutson, is found in 1978.
- May 9 — Larry Eyler's victim, Daniel Scott Mcneive and Jimmy T. Roberts, are found in 1983.
- May 9 — Robert Hansen's victim, Lisa Futrell, is found in 1984.
- May 9 — Lee Choon-jae's victim, Park Eun-joo, is found in 1987.
- May 10 — Jerry McFadden's victims, Bryan Drew Boone and Gena Lee Turner, are found in 1986.
- May 12 — Billy Lee Chadd is sentenced to Death in 1979.
- May 14 — Richard Kuklinski's victim, Daniel Deppner, is found in 1983.
- May 14 — Lillian Doi is attacked by Richard Ramirez in 1985.
- May 15 — Koos Hertogs's victim, Tialda Visser, is found in 1979.
- May 15 — Donna Perry's victim, Kathleen A. Brisbois, is found in 1990.
- May 15 — Aileen Wuornos is sentenced to Death for the second time in 1992.
- May 17 — Montie Rissell's victim, Aletha Byrd, is found in 1977.
- May 17 — Michel Fourniret's victim, Joanna Parrish, is found in 1990.
- May 17 — Robert Boyd Rhoades's victim, Michael Allen Lyons, is found in 1996.
- May 18 — Wayne Boden's victim, Elizabeth Anne Porteous, is found in 1971.
- May 18 — William Bonin's victim, Lawrence Sharp is found in 1980.
- May 19 — Sean King is allegedly murdered by William Bonin in 1980 (suspected victim).
- May 20 — William Bonin's suspected victim, Sean King is found in 1980.
- May 23 — John Wayne Gacy's suspected victim, Charles Hattula, is found in 1978.
- May 25 — Prothero, Mark. Defending Gary: Unraveling the Mind of the Green River Killer, Jossey-Bass. ISBN 978-0787995485 is released in 2007.
- May 26 — Gary Ridgway's victim, Colleen Renee Brockman, is found in 1984.
- May 29 — Florence "Nettie" Lang is attacked by Richard Ramirez in 1985.
- May 30 — Carol Kyle and her son are attacked by Richard Ramirez in 1985.
- May 30 — Gary Ridgway's victim, Debra Lorraine Estes, is found in 1988.
- May 31 — Brenda Ball (victim) disappeared in 1974.