Robert Mandan (February 2, 1932 – April 29, 2018) was an American actor, best known for his roles as Sam Reynolds on Search for Tomorrow (1965–1970), Chester Tate, the philandering businessman husband of Jessica Tate (Katherine Helmond) on the satirical sitcom Soap (1977–1981) and James Bradford on the short lived Three's Company spin off Three's A Crowd (1984–1985) that lasted for one season.

Mandan first acted in such television serials as NBC's From These Roots (1958–1961) and businessman Sam Reynolds on Search for Tomorrow (1965–1970).

He played Woody Billingsley in "The Love Boat" S2 E16 sketch "Like Father, Like Son" which aired 1/26/1979.

His return to serials included the roles of Maxwell Hammer, a friend of Minx, on Santa Barbara (1990), Mr. Jonesy (alongside Louise Sorel) on Days of Our Lives from 1997 to 1998, and guest-starring as a judge on General Hospital in early 2006.

Aside from Applause, he starred in the pre-Broadway version of the 1990s revival of How to Succeed in Business Without Really Trying as J.B. Biggley, he played Andrew Wyke in several touring company productions of the Anthony Shaffer mystery, Sleuth,[2] and he was in the 2002 production of A Twilight Romance at the Falcon Theatre in Burbank, California.