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.A. Law which featured Bibi Besch, Denise Crosby, Anne Haney, and series regular Corbin Bernsen. Sage frequently plays political figures such as senators and mayors, including his role as Senator Walter on Dallas in 1988.