Thành viên hiện tại

• Michael "Flea" Balzary – bass, trumpet, piano, backing vocals (1983–nay)
• Anthony Kiedis – lead vocals (1983–nay)
• Chad Smith – drums, percussion (1988–nay)
• Josh Klinghoffer – guitar, keyboards, piano, backing vocals (2009–nay)

Thành viên cũ

• Hillel Slovak – guitar(1982; 1985-1988)
• Jack Sherman – guitar(1982-1985)
• Dwayne 'Blackbyrd' McKnight – guitar(1988-1989)
• Arik Marshall – guitar(1992-1993)
• Jesse Tobias – guitar(1993)
• Dave Navarro – guitar(1993-1998)
• John Frusciante – guitar (1989-1992; 1998-2009)
• Jack Irons – drums (1982; 1986-1988)
• Cliff Martínez – drums(1982-1985)
• D.H. Peligro – drums(1988-1989)