César Isella (20 October 1938 – 28 January 2021) was an Argentinian singer and songwriter of folk music. He joined Los Fronterizos (The Bordermen) from 1956 to 1966, was one of the main figures of the "Movement of the New Songbook", and in the 1990s he discovered and sponsored the singer Soledad Pastorutti. He has written the music for "Canción con todos" (Song with everyone), regarded as the Latin American anthem.