Terry Kinney (born January 29, 1954) is an American actor and a founding member of the Steppenwolf Theatre Company with Gary Sinise and Jeff Perry. Kinney, born Jamin Eimers, is perhaps best known for his portrayal of the idealistic unit manager Tim McManus on HBO's prison drama Oz. Kinney had a role in the 1988 film Miles from Home, which featured many cast members of Steppenwolf and was directed by Sinise. He will be directing Richard Greenberg's new play Well Appointed Room.

Kinney was born in Lincoln, Illinois, the son of Elizabeth L. (née Eimer), a telephone operator, and Kenneth C. Kinney, a tractor company supervisor. Kinney was married to his Oz costar Kathryn Erbe until 2005, with whom he has a daughter, Maeve (b. 1995), and a son, Carson (b. 2003). He was also previously married to Elizabeth Perkins.