Gregory Ralph Evigan is an American film, stage, and television actor. He began his career in theater, appearing in the Broadway production of Jesus Christ Superstar, followed by a stage production of the musical Grease, in which he portrayed the lead, Danny Zuko. Evigan made his feature film debut in Scorchy (1976), then was cast as the lead in the comedy series B. J. and the Bear, in which he starred between 1979 and 1981.

B. J. and the Bear was an American action comedy television series which aired on NBC from February 10, 1979, to May 9, 1981. Created by Glen A. Larson and Christopher Crowe, the series starred Greg Evigan. The series was produced when the CB radio and trucking craze had peaked in the United States, following the 1974–1976 television series Movin' On, the number one song "Convoy" (1975) by C. W. McCall, as well as the films White Line Fever (1975), Smokey and the Bandit (1977), Convoy (1978), and Every Which Way but Loose (1978).