Allende is a Spanish surname meaning "on the other side". Notable people with the surname include:
Andrés Pascal Allende (b. 1943), Chilean revolutionary and nephew of Salvador Allende Fernando Allende (b. 1952), Mexican entertainer Ignacio Allende (1769-1811), Captain of the Spanish Army in Mexico Ignacio Allende Fernández (b. 1969), Spanish porn actor and producer Isabel Allende (politician) (b. 1945), Chilean politician and daughter of Salvador Allende Isabel Allende (b. 1942), Chilean writer Jorge Allende (b. 1934), Chilean biologist Laura Allende (1911–1981), Chilean politician and sister of Salvador Allende Marcelo Allende (born 1999), Chilean footballer Salvador Allende (1908–1973), President of Chile Paula Frías Allende (1963-1992), daughter of the writer Isabel Allende