Tuvok is a fictional character in the Star Trek media franchise and a main character in the television series Star Trek: Voyager. Tuvok is a Vulcan who serves as the ship's second officer, Chief of Security, and Chief Tactical Officer. He was portrayed by Tim Russ throughout the show's run from 1995 to 2001, as well as in subsequent portrayals.

Star Trek: Voyager is an American science fiction television series created by Rick Berman, Michael Piller and Jeri Taylor. It originally aired from January 16, 1995, to May 23, 2001, on UPN, with 172 episodes over seven seasons. It is the fifth series in the Star Trek franchise. Set in the 24th century, when Earth is part of a United Federation of Planets, it follows the adventures of the Starfleet vessel USS Voyager as it attempts to return home to the Alpha Quadrant after being stranded in the Delta Quadrant on the far side of the galaxy.