Sanity may refer to:

• Sanity, a legal term for an individual of sound mind who can therefore bear legal responsibility for their actions
• Sanity (song), a song by Killing Joke
• Sanity (demogroup), an Amiga demo group
• Sanity (music store), an Australian music store chain
• SAnitY, a professional wrestling faction in WWE
• Aiken's Artifact, a 2000 video game developed by Monolith Productions

• David Sykes (programmer)
• David Syme (footballer)
• David Syme Russell
• David Syme Russell (theologian)
• David Symington
• David Symonds
• David S. Yost
• David Szalay
• David Szappanos
• David Sze
• David Szott
• David Sánchez (boxer)
• David Sánchez Guevara
• David Sánchez Heredia
• David Sánchez-Muñoz
• David Sánchez Parrilla
• David Sébastien Dewaele
• David Tab Rasmussen
• David Tahnya Wirikom
• David Tait (disambiguation)
• David Tal
• David Tal (disambiguation)
• David Talerico
• David Talley
• David (Tamil film)