| Abbreviation | Definition |
|---|---|
| ACSUS | AIDS Cost and Services Utilization Survey |
| ACSUS | AIDS Costs and Service Utilization Survey |
| ACSV | A Chacun Ses Vacances |
| ACSV | Air Cargo Services of VietNam |
| ACSV | Alternate Cash Surrender Value |
| ACSV | Aqueductal CSF Stroke Volume |
| ACSW | AcadeMir Charter School West |
| ACSW | Accredited Clinical Social Worker |
| ACSW | Air Conflict Secret Wars |
| ACSX | Auto Commission System x |
| ACSZ | Asociatia Cultivatorilor de Sfecla de Zahar |
| ACT | Acceptance and Commitment Therapy |
| ACT | Acceptance Commitment Therapy |
| ACT | Acknowledge Care Tell |
| ACT | Advanced Combat Tracker |
| ACT | Advocating Change Together |
| ACT | Arms Control Today |
| ACT | ASLD Curriculum and Training |
| ACT | Association for Contract Textiles |
| ACT | Atacama Cosmology Telescope |