Casto may refer to:
- 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
- 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
- Casto, Lombardy, Italy
|This disambiguation page lists articles associated with the title Casto.
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