Star Trek: Titan is a series of science fiction novels set within the Star Trek media franchise, which detail the adventures of the USS Titan under the command Captain William T. Riker, who was part of the main cast the 1987-1994 TV series Star Trek: The Next Generation and its spinoff films. The series was published by Simon & Schuster imprints Pocket Books, Pocket Star, and Gallery Books from 2005 to 2017. The novels are set after the events depicted in the 2002 film Star Trek: Nemesis.