A Casta (, ) was a hierarchical system of race classification created by Spanish elites (españoles) in Hispanic America during the Spanish colonial period. The sistema de castas or the sociedad de castas was used in 17th and 18th centuries in Spanish America and Spanish Philippines to describe as a whole and socially rank the mixed-race people who were born during the post-Conquest period. These unions produced in the process known as mestizaje. A parallel system of categorization based on the degree of acculturation to Hispanic culture, which distinguished between gente de razón (Hispanics) and gente sin razón (non-acculturated natives), concurrently existed and supported the idea of casta.

Castá (, ) is a village and municipality in western Slovakia in  Pezinok District in the Bratislava Region, on the foothills of the Little Carpathians. The village is best known for the Cervený Kamen Castle, which is above the village.