Agustín Rueda Sierra (1952–1978) was an anarchist and anti-Francoist activist, member of Confederación Nacional del Trabajo (CNT) and Coordinadora de Presos En Lucha — Prisoners in Struggle Coordinating Body (COPEL).

[1] His death led to dismissal and prosecution of the prison director, Eduardo José Cantos Rueda.

His mother was a weaver, and his father was a miner; after finishing elementary school in 1966, he started working as an apprentice in a motor factory away from home.

There Rueda makes first contact with Coordinadora de Presos En Lucha — Prisoners in Struggle Coordinating Body (COPEL), and he becomes an active member of the organisation.

The two doctors who hid the serious condition of Agustín Rueda after the beating were sentenced to two years in prison.