As a nickname, Killer or The Killer may refer to:
People known as Killer
Pietro Aurino (born 1977), Italian former boxer Keegan Brown (born 1992), English darts player Fred Burke (1893–1940), American armed robber and contract killer Clive Caldwell (1910–1994), Australian World War II flying ace Doug Gilmour (born 1963), Canadian retired National Hockey League player Mack Gray (1905–1981), American actor Derek Hales (born 1951), English former footballer Kevin Kaminski (born 1969), Canadian former National Hockey League player called "Killer Kaminski" Arthur Kane (1949–2004), American bass guitarist for the glam rock band the New York Dolls Harmon Killebrew (1936–2011), American Major League Baseball player Katlego Mphela (born 1984), South African former footballer
People known as The Killer Jesús Chávez (born 1972), Mexican boxer nicknamed "El Matador" ("The Killer") Danilo Di Luca (born 1976), professional cyclist nicknamed "The Killer from Spoltore" Christos Dimopoulos (born 1958), Greek retired footballer nicknamed Φονιάς ("Fonias", meaning "Killer") Jerry Lee Lewis (1935–2022), American rock-and-roll and country music singer/pianist Christiaan Lindemans (1912–1946), Dutch double agent who worked for both sides in the Second World War, known as "le Tueur" ("the Killer")
See also