Martí Barrera i Maresma (29 May 1889 in La Bisbal del Ampurdán – 26 April 1972 in Barcelona) was a Spanish politician, member of the Republican Left of Catalonia.
He had also been an active member of the Confederación Nacional del Trabajo (CNT), director of the newspaper Solidaridad Obrera and minister of Labor in the Generalitat de Catalunya.
In 1920 he was arrested and imprisoned in Mahón, in the Balearic islands, along with Lluís Companys, Salvador Seguí and about thirty other people, for their trade union activities.
These views, along with the assassination of Salvador Seguí by employers' gunmen and the rise of what he considered extremist groups inside the CNT, led him to distance himself from it and from Solidaridad obrera.
[3] During the dictatorship of Primo de Rivera, he created with others the newspaper Typografia Cosmos in which addressed issues of the left and the labor movement.