Sebastián Acevedo Becerra (20 January 1933 – 11 November 1983) was a Chilean worker who, in protest at the arrest of his children by the secret police of the Augusto Pinochet dictatorship, self-immolated in front of the Cathedral of the Most Holy Conception, in the town of Concepción. On 9 November 1983, Galo and María Candelaria Acevedo, two of Sebastián's children, were arrested by armed civilians who did not identify themselves. He searched for them in different precincts, suspecting that they were being held by the National Information Center.