"Billy" Craddock (July 16, 1946 – March 16, 2004) was an American author who published two novels in the early 1970s chronicling psychedelic and biker culture in California in the 1960s.
Doubleday published Craddock's books Be Not Content: A Subterranean Journal in 1970, and Twilight Candelabra in 1972.
Craddock has been called one of the seminal chroniclers of the psychedelic period, along with Timothy Leary, Alan Watts and Andrew Weil.