Casto may refer to:
People
editGiven name
edit- Casto (footballer) (born 1982), Spanish footballer
- Casto Innocenzio Ansaldi (1710–1780), Italian professor, theologian and archaeologist
- Casto Méndez Núñez (1824–1869), Spanish naval officer
- Casto Nopo, Equatoguinean football manager
- Casto Plasencia (1846–1890), Spanish painter
Surname
edit- Frank M. Casto (1875–1965), American orthodontist
- Immanuel Casto (born 1983), Italian songwriter
- Kory Casto (born 1981), American baseball player
- Martha Curnutt Casto (1812–1887), American murderer
Places
edit- Casto, Lombardy, Italy