- Secret of NIMH, The (1982)
- Secret of the Sword, The (1985)
- Secret People (1952)
- Secret Santa (2015)
- Secret Sharer (2014)
- Secret Smile (2005)
- Secret Superstar (2017)
- Secret Window (2004)
- Secret, Un (A Secret) (2007)
- Secretariat (2010)
- Secretary (2002)
- Secretly, Greatly (2013)
- Secreto Del Dr. Orloff, El (1964)
- Secrets & Lies (1996)
- Secrets in a Small Town (2019)
- Secrets in Suburbia (2017)
- Secrets in the Sky: The Untold Story of Skunk Works (2019)