Fred Wellisch is an actor, known as Sluis in the film The Quiet.

Theatre credits include Jimmy Connelly in Miracles in the Fall (Polarity Ensemble Theatre); Scheffler in The Ugly One (Oracle Theatre); Weller Martin in The Gin Game and Alan Bennett in The Lady in the Van (Lincoln Square Theatre); Ray in The Bird Sanctuary (Side Project Theatre); Avery in Men of Tortuga (Profiles Theatre); Shylock in Merchant of Venice (Bohemian Theatre); Skelly Mannor in The Rimers of Eldritch (Eclipse Theatre); Mr. Pritchett in Detective Story (Strawdog Theatre); Jean-Paul Sartre in Nelson and Simone (Live Bait Theatre); Peter in Born Guilty (Red Orchid Theatre); and Freddie in A Day in the Death of Joe Egg (Court Theatre).