Roy Harper may refer to:
Roy Harper (character), DC Comics character Roy Harper (Arrowverse), the Arrowverse version of the character Roy Harper (footballer) (1929–2023), Australian footballer Roy Harper (referee) (died 1969), English football referee Roy Harper (singer) (born 1941), English musician Roy Winfield Harper (1905–1994), American judge
See also "Hats Off to (Roy) Harper", a song about the English musician by Led Zeppelin on the 1970 album Led Zeppelin III