Tammy and the T-Rex is a 1994 American science fiction comedy film directed by Stewart Raffill and written by Raffill and Gary Brockette. The film, which stars Terry Kiser, Ellen Dubin, Denise Richards, Paul Walker, George Pilgrim, and John Franklin, centers around a high school student named Tammy, whose boyfriend Michael has his brain implanted in the body of a robotic Tyrannosaurus rex by a mad scientist.

Tammy and the T-Rex in its entirety was featured in the video game High on Life (2022).