Mass Murder
Mass Murder, Is Called "Spree Killer" In The USA. And Refers To A Killer Who Kills His Victims Over A Short Period Of Time
| KILLS | YEARS | NAME |
| 17 | 1996 | Thomas Hamilton |
| 16 | 1987 | Michael Ryan |
| 12 | 2010 | Derrick Bird |
| 5 | August 2021 | Jake Davison |
| 7 | 1999 | Richard Fielding |
| 5 | 1986 | George Stephenson |
| 5 | 2003 | Ken Regan & Bill Horncy |
| 5 | 1985 | Jeremy Bamber |
| 4 | 1909 | Samuel Atherley |
| 4 | 1988 | Anthony Arkwright |
| 4 | 2006 | Rahan Arshad |
| 4 | 2021 | Damien Bendall |
| 4 | 2012 | Dale Cregan |
| 4 | 2004 | Daniel Gonzalez |
| 4 | 1999 | David Morris |
| 4 | 2006 | David Bradley |
| 4 | 1967+1976 | Robert Mone |
| 4 | 2004 | Mark Hobson |
| 3 | 1929 | James Achew |
| 3 | 2001 | Drew Afleck |
| 3 | 2012 | Michael Atherton |
| 3 | 2000 | Azhar Ali Mehmood |
| 3 | 2000 | Philip Austin |
| 3 | 1999 | David Copeland |
| 3 | 1982 | Wilbert Dyce |
| 3 | 2001 | Karl Bluestone |
| 3 | 1983 | Arthur Hutchinson |
| 3 | 2015 | Artur Simpson-Kent |
| 3 | 2004 | Richard Hicks |
| 3 | 1973 | David McGreavy |
| 3 | 2007 | Pierre Williams |