Carl Johnson (American football) (born 1949), American football playerCarl Johnson (soccer) (1892–1970), American soccer playerCarl Johnson (athlete) (1898–1932), American track-and-field athleteCarl J. Johnson (1929–1988), American public health physician who opposed nuclear testingCarl H. Johnson, American-born biologistCarl Johnson (Grand Theft Auto), video game character and protagonist of Grand Theft Auto: San AndreasCarl Johnson, film and television composer and orchestrator reference
