Mary Sinclair (15 November 1922 – 5 November 2000) was 'n Amerikaanse aktrise. Sy was bekend vir haar rolle in die televisiereekse Lights Out (1946), Studio One in Hollywood (1948), Tales of Tomorrow (1951), en One Step Beyond (1959). 1946: Lights Out 1948: Studio One in Hollywood 1949: Suspense 1950: The Billy Rose Show 1950: Starlight Theatre 1951: Tales of Tomorrow 1954: Woman with a Past 1955: Paris Precinct 1959: One Step Beyond Mary Sinclair in die Internet-rolprentdatabasis