Robert P. Cohen was an American unit production manager, producer, and assistant director.

After attending New York University, Cohen earned his way into the DGA trainee program, getting his feet wet on Martin Scorsese's Taxi Driver (1976) and Martin Ritt's The Front (1976).

He moved up to second assistant director on The Goodbye Girl (1977) and would go on to work as a second assistant director on a number of projects including National Lampoon's Vacation (1983) and the television series CHiPS, before becoming a first assistant director on The Breakfast Club (1985), Pee-Wee's Big Adventure (1985), Armed and Dangerous (1986) and the series Sledge Hammer! and Picket Fences.

As a unit production manager, Cohen led the films Doc Hollywood (1991) and A Little Princess (1995), as well as the series The West Wing, 24, and Nightstalker, the latter two of which he also produced.

Cohen died December 17, 2020, in Los Angeles, California. He was 76.