Robert Clohessy is an American actor best known for his role as Correctional Officer Sean Murphy on the HBO drama series Oz, from 1999-2003. He was also a cast member in the final season of Hill Street Blues.
Clohessy was born in the Bronx, the son of John Clohessy, a police officer. He graduated from SUNY Purchase, along with Oz co-stars Edie Falco, Kirk Acevedo, and Seth Gilliam.
Clohessy fought in the 1975 Golden Gloves in Madison Square Garden. He graduated from Pearl River High School in Pearl River, New York where he played varsity football.
He has had recurring roles in the ABC daytime drama One Life to Live, Kidnapped and New Amsterdam.
Robert lives in Los Angeles, NYC, and Cornwall, CT.