David Sage (born 13 July 1940; age 84) is the actor who played the role of Tarmin in the Star Trek: The Next Generation fifth season episode "Violations". He filmed his scenes between Tuesday 29 October 1991 and Friday 1 November 1991 and on Tuesday 5 November 1991 on Paramount Stage 8 and 9.

Sage is often seen playing the role of a judge. This was the case with his 1991 appearance on Quantum Leap, starring future Star Trek: Enterprise actors Scott Bakula and Dean Stockwell and guest-starring Richard Herd. It was also the case in a 1986 episode of L.