| Acronym | Definition |
|---|
| IMCA | Independent Mental Capacity Advocate (UK) |
| IMCA | International Motor Contest Association (Vinton, Iowa) |
| IMCA | International Marine Contractors Association |
| IMCA | Investment Management Consultants Association |
| IMCA | International Management Centres Association (Buckingham, UK) |
| IMCA | Instituto de Matematica y Ciencias Afines (Spanish) |
| IMCA | Integrated Management of Coastal Areas |
| IMCA | Institute of Management Consultants and Advisors (Dublin, Ireland) |
| IMCA | Internet Multimedia Conferencing Architecture |
| IMCA | International Music Center of America (Silver Spring, MD) |
| IMCA | International Meteorite Collectors Association, Inc. |
| IMCA | Integrated Motor Control Assembly |
| IMCA | Integrity Management Capabilities Assessment |
| IMCA | Indianapolis Museum of Contemporary Art (also seen as IMOCA; Indianapolis, IN) |