Deza may refer to:
People Alfredo Deza (high jumper) (born 1979), former Peruvian athlete specializing in the high jump Davis Deza (born 1991), Peruvian football midfielder Elena Deza (born 1961), French-Russian mathematician Diego Deza (1444–1523), inquisitor Jean Deza (born 1993), Peruvian footballer Michel Deza (1939–2016), Soviet and French mathematician Pedro de Deza (1520–1600), Spanish Roman Catholic cardinal and bishop
Places O Deza, a region in Spain Deza, Soria, a municipality in Soria Province, Spain Deza, Iran (disambiguation)
Other Swiss Agency for Development and Cooperation, agency in Switzerland, in German Direktion für Entwicklung und Zusammenarbeit (DEZA)