May 7 is the 127th day of the year (128th in leap years). There are 238 days remaining.
- 1896 — H. H. Holmes died.
- 1954 — Tony Garcia is born.
- 1958 — Tracy Housel is born.
- 1968 — Michael Edward Raney is murdered by David Meirhofer.
- 1972 — Mary Ann Pesce and Anita Mary Luchessa are murdered by Ed Kemper.
- 1973 — Dale Scheanette is born.
- 1984 — Larry Eyler's victim, David M. Block, is found.
- 1986 — Manuel Pardo is apprehended.
- 1992 — Sarah Blessing is murdered by the "I-70 Killer".
- 2004 — Shin Min-a is murdered by Yoo Young-chul.
- 2013 — Lois Jurgens died.
- 2018 — Shawn Michael Grate is convicted of murder.
- 2021 — Hugo Osorio Chávez is apprehended.