| Rank | Abbreviation | Meaning |
|---|
| ***** | APCA | Asociación en Participación, Consorcio o Asociación
| |
| **** | APCA | Asia-Pacific Countertrade Association
| |
| *** | APCA | Academy of Pharmacy College Academicians
| |
| *** | APCA | Association Professionnelle de la Circulation Aérienne
| |
| *** | APCA | Australian Pest Controllers Association Inc.
| |
| *** | APCA | Asia-Pacific Center for Architecture
| |
| ** | APCA | Association des Plaisanciers de la Côte d'Azur
| |
| ** | APCA | Alaska Primary Care Association
| |
| ** | APCA | Assemblée Permanente des Chambres d'Agriculture
| |
| ** | APCA | American Professional Captains Association
| |
| ** | APCA | American Portland Cement Alliance
| |
| ** | APCA | Associação Paulista de Críticos de Arte
| |
| * | APCA | Asociación de Productores de Café Genuino Antigua
| |
| * | APCA | Amateurs Photographes et Cinéastes d'Auvergne
| |
| * | APCA | American Concrete Pavement Association
| |
| * | APCA | Associação Portuguesa de Controlo Automático
| |
| * | APCA | Australian Petroleum Consultants Association
| |
| * | APCA | American Philosophical Counseling Association
| |
| * | APCA | Apc:AA
| |
| * | APCA | Associação Portuguesa de Corridas de Aventura
| |
| * | APCA | American Personal Chef Association
| |
| * | APCA | Auditing Practices Committee Archive
| |
| * | APCA | American Pool Checker Association
| |
| * | APCA | Associação Portuguesa das Casas Antigas
| |
| * | APCA | Amateur and Professional Cartoonists Association
| |