Castella is a type of Japanese sponge cake.

Castella or de Castella may also refer to:

• Hubert de Castella (1825–1907), Swiss-Australian writer, artist and winemaker
• Jean-Edouard de Castella (1881–1966), Swiss painter and illustrator
• Lilly de Castella, winemaker
• Paul de Castella (1827–1903), Swiss-Australian grazier and winemaker
• Robert de Castella (born 1957), Australian former world champion marathon runner
• Russ Castella (born 1983), American record producer
• Svend Aage Castella (1890–1938), Danish amateur soccer player
• Castella (Martinho Joaquim Castella Quessongo), Angolan footballer

• Castella, California
• Castella, Lot-et-Garonne, France
• Castella, Victoria, Australia
• Castellau, Wales, has the alternative name of Castella

• Castella (grape), another name for the Italian wine grape Bombino bianco
• Castella, ancient Roman fortlets
• Conservatorio de Castella, arts institute in Costa Rica

• Castell (disambiguation)
• Castelli (disambiguation)
• Castello (disambiguation)
• Castells (disambiguation)
• Castile (disambiguation); Castella is the Catalan-language name of this region