Jason Deneen Beghe (; born March 12, 1960) is an American actor. Since 2014, he has starred in the NBC TV series Chicago P.D. as sergeant Hank Voight. He is also known for starring in the 1988 George A. Romero film Monkey Shines, playing Demi Moore's love interest in G.I. Jane, appearing as a police officer in the film Thelma & Louise, starring opposite Moira Kelly in the television series To Have & to Hold, and having recurring roles on Picket Fences, Melrose Place, Chicago Hope, American Dreams, Cane, and Californication.

Beghe is a former Scientologist. He began taking Scientology courses in 1994 and later appeared in a Church of Scientology advertising campaign and in promotional videos. Beghe left the church in 2007 and has publicly criticized Scientology since then.