| Acronym | Definition |
|---|
| ACCU➣Asia/Pacific Cultural Centre for UNESCO |
| ACCU➣Association of C and C++ Users |
| ACCU➣Association of Asian Confederation of Credit Unions (est. 1971) |
| ACCU➣Arizona Central Credit Union |
| ACCU➣Australian Central Credit Union |
| ACCU➣Autralian Carbon Credit Unit (environment) |
| ACCU➣Air Cooled Condensing Unit |
| ACCU➣Association of Catholic College and Universities |
| ACCU➣Audio Center Control Unit |
| ACCU➣Automated Control System Certified for Unattended Engine room (ABS) |