Timothy Darrell Russ (born 22 June 1956; age 62), better known as Tim Russ, is an actor who has portrayed different characters in various Star Trek television series and movies; however, he is best known for his portrayal of Lieutenant Commander Tuvok on Star Trek: Voyager. He also directed the Voyager episode "Living Witness".

Along with Jonathan Frakes, Russ is one of the only Star Trek actors to have appeared on-screen with four Star Trek series captains. (Frakes did appear in Star Trek Generations with Kirk actor William Shatner, but he did not share any scenes with him. Russ, on the other hand, did share scenes with Shatner in that movie.)

One of Russ' favorite movies is Star Trek II: The Wrath of Khan. One of his favorite actors is the late William Marshall, who appeared on the Star Trek: The Original Series episode "The Ultimate Computer" as Doctor Richard Daystrom. Russ once cited his favorite TOS episodes as "Assignment: Earth", "All Our Yesterdays", and "Balance of Terror". (Star Trek: Communicator issue 101, p. 53)