The Associação Portuguesa de Coleccionadores de Armas (APCA) is a Portuguese association dedicated to the preservation, study and appreciation of the historical heritage of arms, ammunition and weaponry, from Portugal and abroad. It promotes collecting as a cultural, scientific and heritage activity, recognising that collections can preserve valuable knowledge and support research into the history, technology and material culture of arms and ammunition across the centuries. APCA also highlights the contributions of its members to research and scientific work in Portugal, and aims to share knowledge as a legacy for future generations.

The association provides information and resources through its website, including publications, news, legislation and a gallery. It also offers training related to collector licensing: under the relevant Portuguese law, accredited associations are responsible for assessing applicants, and successful candidates receive a certificate of aptitude after passing an examination. APCA is based in Lisbon and maintains contact channels for enquiries. Its website lists events, though the events section is currently marked as under construction.