Willie Boy was an early 20th-century fugitive from the law in Southern California.

Willie Boy may also refer to:

Books and film Willie Boy: a Desert Manhunt, a 1960 novel by Harry Lawton Tell Them Willie Boy Is Here, a 1969 film starring Robert Blake and Robert Redford

People Wilfred Johnson, FBI informant related to the Gambino crime family

Songs Tell' Em Willie Boy's A' Comin, a 1972 single by Tommy James Willie Boy, on the 1973 album Act III by The Seldom Scene Willie Boy, released in 1979 by Wayne Rostad

See also Boy Willie, a character in the 1987 play The Piano Lesson Boy Willie, a character in the 1995 film The Piano Lesson Willie Boyd, footballer