Associação 25 de Abril (A25A) is a Portuguese association dedicated to preserving the memory and advancing the values of the 25 April 1974 Carnation Revolution. The revolution, led by the Armed Forces Movement (MFA), ended 48 years of dictatorship and brought promises of freedom, an end to colonial rule and war, and the establishment of democracy. The association describes its work as continuing the ideals of the April movement and encouraging public understanding of these historic events.

A25A offers historical and educational resources, including archives, a documentation centre, historical databases, and material about the Colonial War and the MFA. Its website also features films and documentaries, RTP archive content, publications, anniversary messages, and information on the Constitution. Activities include exhibitions, trips, commemorative events, a contemporary history course, and a teaching-oriented historical route. The association publishes its bulletin, O Referencial, and provides a restaurant and bar. Visitors can learn about membership, the association’s governing bodies, reports, and accounts, or contact the organisation.