A kingslayer is a person who commits regicide.
Kingslayer may also refer to:
The Kingslayer, a 1949 short story collection by L. Ron Hubbard Jaime Lannister, a fictional character in the A Song of Ice and Fire series Malo kingi, a jellyfish known as the common kingslayer Seth Rollins (born 1986), nicknamed the "Kingslayer" in WWE A Super Friends villain "Kingslayer", a song by Bring Me the Horizon featuring Babymetal from the commercial release Post Human: Survival Horror, 2020 "Kingslayer", a song by Grand Magus from the album Wolf's Return, 2005