From Modern American

The name Chavez derives from the Spanish and Portuguese word chaves, meaning keys. It is a surname used primarily in Spanish-speaking countries. The name is of patronymic origin, indicating that it was often given to someone whose ancestor held a significant position, like a key-holder or gatekeeper. Chavez has deep roots in Hispanic culture and is widespread in Mexico, Venezuela, and the Philippines. Notable personalities with this surname include Cesar Chavez, a prominent civil rights activist, and Hugo Chavez, the former president of Venezuela.