Carlos Altamirano Orrego (December 18, 1922 – May 19, 2019) was a Chilean lawyer. He was one of the most influential politicians of Chilean socialism. He was the general secretary of the Chilean Socialist Party (PS). He served from 1971 through 1979. He was deputy from 1961 to 1965 and senator from 1965 to 1973. He was born in Santiago, Chile.