A list of events in 1951 related to serial killers.
January[]
- 12 — Warren Alexander is born.
- 22 — Anatoli Neželski is born.
- 24 — Tadeusz Kwaśniak is born.
February[]
- 6 — Alan Phillips is born.
- 7 — Joseph Ture Jr. is born.
- 16 — David Birnie is born.
March[]
- 8 — Martha Beck & Raymond Fernandez died.
- 14 — Alvin Andrew Kelly is born.
- 21 — Houston Roberts died.
- 21 — Winford Stokes is born.
April[]
- 7 — Hassan Orangi is apprehended.
- 7 — Jozef Slovák is born.
- 14 — Bruce Mendenhall is born.
- 17 — James Hicks is born.
- 21 — Staf Van Eyken is born.
May[]
- 21 — Douglas Gretzler is born.
- 22 — Kenneth Bianchi is born.
- 23 — Catherine Birnie is born.
- 31 — Anthony Hardy is born.
June[]
- 25 — Joseph Ervin is born.
- 27 — Leonard Fraser is born.
- 29 — Gary Grant is born.
July[]
- 10 — Donato Bilancia is born.
August[]
- 1 — Valery Skoptsov is born.
- 9 — Benny Hodge is born.
- 28 — Danny Bible is born.
- 31 — Ángel Nieves Díaz is born.
September[]
- 12 — Gerald Stano is born.
- 29 — Ray Gardner died.
October[]
- 1 — Anthony LaRette is born.
- 6 — Diane Wilder (victim) is born.
- 8 — Bruce McArthur is born.
November[]
- 4 — Roger Dale Stafford is born.
- 8 — Brenda Ball (victim) is born.
- 10 — William Henry Hance is born.
- 22 — Dale R. Anderson is born.
- ? — Saad Iskandar Abdel Masih is apprehended.
December[]
- 2 — Wilson Chouest is born.
- 2 — Hassan Orangi died.
Unknown[]
- ? — Anna Allas died.
- ? — Antonio Gali Balaguer is born.
- ? — Norman Bernard is born.
- ? — Alberto Caldera García died.
- ? — Samuel Fernbach is born.
- ? — Yoshiteru Hamada is born.
- ? — Harry Little is born.
- ? — Nicolas Panard is born.
- ? — Louis van Schoor is born.
- ? — Alexander Taran is born.
- ? — Marek Zivala is born.