- Shulie Cowen (1 movie)
- Shun Sugata (4 movies)
- Shuna Lemoine (1 movie)
- Shyaam Karra (1 movie)
- Shyann McClure (1 movie)
- Shyloh Oostwald (1 movie)
- Sian Grace Phillips (1 movie)
- Siân Phillips (1 movie)
- Sian Scott (1 movie)
- Sian Thomas (2 movies)
- Sibusisu Moyo (1 movie)
- Sibyl Santiago (1 movie)
- Sid Caesar (1 movie)
- Sid Dawson (1 movie)
- Sid Haig (2 movies)
- Sid Mitchell (1 movie)
- Sidné Anderson (1 movie)
- Sidney Beitz (1 movie)
- Sidney Johnston (1 movie)
- Sidney Mende-Gibson (1 movie)
- Sidney Poitier (1 movie)
- Sidney S. Liufau (1 movie)
- Siena LaGambina (1 movie)
- Sienna Guillory (8 movies)
- Sienna Miller (9 movies)
- Sierra McCormick (2 movies)
- Sig Frohlich (1 movie)
- Sigal Diamant (1 movie)
- Sigitas Rackys (1 movie)
- Sigmund Bøe (1 movie)
- Signe Egholm Olsen (1 movie)
- Sigourney Weaver (16 movies)
- Silas Carson (6 movies)
- Silvana Bosi (1 movie)
- Silvano Marchetto (1 movie)
- Silvia Colloca (1 movie)
- Silvia Curiel (1 movie)
- Silvia Kal (2 movies)
- Silvia Lombardo (1 movie)
- Silvia Sabaté (1 movie)
- Silvio Simac (2 movies)
- Sim Evan-Jones (1 movie)
- Simeon Sjöberg (1 movie)
- Simo Mogwaza (1 movie)
- Simon Abkarian (1 movie)
- Simón Andreu (1 movie)
- Simon Baker (3 movies)
- Simon Bird (2 movies)
- Simon Buckley (1 movie)
- Simon Burke (1 movie)