William Bond (Bill) Warren (born April 26, 1943) is an American film critic who has been active in the science fiction community and is a recognized expert on science fiction, horror and fantasy films. He wrote the two-volume work Keep Watching the Skies! American Science Fiction Movies of the Fifties (1982 and 1986), The Evil Dead Companion, and contributes to Leonard Maltin's Movie and Video Guide. He also wrote the 1968 short story "Death Is a Lonely Place", which appeared in the first issue of Worlds of Fantasy. He also wrote scripts for the Warren comic book publications, Creepy, Eerie and Vampirella.

Warren was born in North Bend, Oregon, and grew up in Gardiner, on the Umpqua River. He became interested in science fiction films during their boom years in the mid-1950s, and, discovering Famous Monsters of Filmland magazine with its earliest issues, quickly received regular acknowledgments and "thanks" throughout the early years of the magazine, along with Don Glut, Eric Hoffman and Mark Thomas McGee. He graduated from Reedsport High School, then from the University of Oregon, in Eugene, Oregon. He and his wife Beverly moved to Los Angeles in 1966, and have lived there since; for many years, they were active in LASFS and was an assistant to Forrest J Ackerman, through whom he came into contact with many major filmmakers-in-waiting who were also inspired by Ackerman, and developed independent friendships with several of them. He occasionally contributes to supplemental material for DVDs, and for ten years was part of a two-man team with William Rotsler that produced short segments on American television for the French TV series "Destination Series." http://fr.wikipedia.org/wiki/Destination_s%C3%A9ries