- ACHI stands for Arkansas Center for Health Improvement
- ACHI stands for Advances in Computer-Human Interaction (international conference)
- ACHI stands for American Country Holdings, Inc.
- ACHI stands for Advisory Council on Health Infostructure (Canada)
- ACHI stands for International Conference on Advances in Computer-Human Interaction
- ACHI stands for Air Center Helicopters, Inc. (Fort Worth, TX)
ACHI