Clarence John "Clancy" Brown III is an American actor. Prolific in film and television since the 1980s, Brown is often cast in villainous and authoritative roles.

Bad Boys is a 1983 American coming-of-age crime drama film set in a juvenile detention center, starring Sean Penn, Esai Morales, and Clancy Brown, Alan Ruck and Ally Sheedy in their film debuts. The film is directed by Rick Rosenthal. The original music score was composed by Bill Conti.