Blas Chumacero

Blas Chumacero Sánchez (18 January 1905 – 12 July 1997) was a Mexican trade union leader and politician. He served as interim general secretary of the Confederation of Mexican Workers (CTM) after Fidel Velásquez's death in 1997.

Born in the city of Puebla, Chumacero Sánchez was the son of Zenón Chumacero Bueno and Josefa Sánchez Serrano. A high school dropout textile worker, he became a founding member of the General Confederation of Workers and Farmers of Mexico (CGOCM) in 1920 and a founding member of the Institutional Revolutionary Party's forerunner, the National Revolutionary Party (PNR). In 1936 he became a founding delegate of the Confederation of Mexican Workers (CTM) and three years later he founded the Workers' Federation of Puebla, in which he served as general secretary for over 45 years.

Because of the strong (and usually coercive) ties between the Mexican labor movement and the Institutional Revolutionary Party during most of the 20th century, Chumacero was elected once to the Congress of Puebla, six times to the Chamber of Deputies and twice to the Senate, for a total of 33 years serving as legislator.

He was married to Aurelia Corona and adopted two siblings: Jaime and Rebeca Chumacero Lucio.