Ángel Marcos Salas (1904 in Madrid – 1988 in Toulouse) was a Spanish trade unionist.

He worked on the railroads,[1] becoming member of the National Confederation of Labor (Spanish: Confederación Nacional del Trabajo, CNT).

[2] [3] In July 1936, after the outbreak of the Spanish Civil War, he was appointed a member of the Confederal Committee at Madrid Central Station and shortly afterwards took charge of a century of the Rosal Column.

He came to serve as commissar of the 30th, 80th and 140th mixed brigades,[4][5] taking part in the Battle of the Ebro.

He went on to live in the French city of Toulouse, where he would continue developing various activities within the CNT until his death.