May 14 is the 134th day of the year (135th in leap years). There are 231 days remaining.
- 1886 — Mary Dixon is murdered by Mary Ann Britland.
- 1897 — Frederick Hollman died.
- 1955 — Timothy McCoy (victim) is born.
- 1957 — Dorángel Vargas is born.
- 1959 — David Morton is born.
- 1965 — Andrew Six is born.
- 1971 — Lyudmila Andaralova is murdered by Gennady Mikhasevich.
- 1971 — Kiyoshi Ōkubo is apprehended.
- 1976 — Randall Reffett and Sam Stapleton are murdered by John Wayne Gacy.
- 1977 — Mykhailo Feskiv is born.
- 1981 — David Carpenter is apprehended.
- 1983 — Terry Lee Gambrel is murdered by Randy Kraft.
- 1983 — Randy Kraft is apprehended.
- 1983 — Richard Kuklinski's victim, Daniel Deppner, is found.
- 1984 — Hsu Tung-chih died.
- 1985 — Bill Doi is murdered by Richard Ramirez.
- 1985 — Lillian Doi is attacked by Richard Ramirez.
- 2007 — Trent Benson is apprehended.
- 2009 — Yegor Khabarov is apprehended.
- 2010 — Hu Dejun & Zhang Liming are executed by firing squad.
- 2016 — Phyllis Payne is murdered by Billy Chemirmir.
- 2023 — Merly Andrea Rengifo Cuadros is allegedly murdered by Efraín Sarmiento Cuero (suspected victim).