Armendáriz is a Basque surname that may refer to:

• Alejandro Armendáriz, an Argentine physician and politician, governor of Buenos Aires province (1983–1987)
• José de Armendáriz, a Spanish soldier and colonial administrator
• Lope Díez de Armendáriz, a Spanish nobleman and viceroy of New Spain
• Luis Díez de Aux y Armendáriz, a Spanish clergyman and Viceroy of Catalonia
• Montxo Armendáriz, an awarded Spanish screenwriter and film director
• Pedro Armendáriz, a Mexican actor
• Pedro Armendáriz Jr., a Mexican actor and son of Pedro Armendáriz
• Ramon Armendariz, American baseball umpire
• Saúl Armendáriz, Mexican professional wrestler