The Hidden Worlds of Zandra

William "Bill" Rotsler (1926–1997) was an American author of several science fiction novels and short stories. He also wrote television and film novelizations and a number of non-fiction works on a variety of topics ranging from Star Trek to pornography. He was a prominent member of science fiction fandom. He was also an artist and sculptor, primarily in metal, who contributed to the art at the entrance to the Los Angeles Police Department headquarters.

William Rotsler used these alternate names: Victor Appleton, John Ryder Hall, William Arrow and Bill Rotsler.