Denise Michelle Crosby (born November 24, 1957) is an American actress who is perhaps best known for her portrayal of Security Chief Tasha Yar on the first season of Star Trek: The Next Generation, the Stephen King film, Pet Sematary. and the disaster film, Deep Impact.

She played herself in "Not All Dogs Go To Heaven". Stewie Griffin killed her with a Klingon-style pistol as an "example". Her death came with a stark warning of "do not speak unless spoken to".