| Acronym | Definition |
|---|
| PACIS➣Pacific Asia Conference on Information Systems |
| PACIS➣Pan-American Climate Information System (est. 1998) |
| PACIS➣Piedmont Athletic Conference of Independent Schools (North Carolina) |
| PACIS➣Passenger Address and Communication Interphone System (aviation) |
| PACIS➣Patient Administration and Clinical Information System (database; UK) |