Pernell Roberts, born 18 May 1928 in Waycross, Georgia, USA, is an American actor. He is also known for his activism.

Roberts came to prominence playing Adam, Ben Cartwright’s firstborn, in the TV series Bonanza. Despite the show’s success and his own popularity, he left the series due to disagreements with the writers.

Roberts continued to act but was not highly visible again until the 1980s when he starred in the long-running Trapper John, M.D..

He hosted in 1991 and is now apparently retired.