| Acronym | Definition |
|---|
| PHSI➣Pending Home Sales Index (National Association of Realtors) |
| PHSI➣Public Health Sciences Institute (Morehouse College; Atlanta, GA) |
| PHSI➣Payload Header Suppression Index (telecommunications) |
| PHSI➣Program for Health Systems Improvement (Harvard University; Boston, MA) |
| PHSI➣Persatuan Hoki Seluruh Indonesia (Indonesian hockey association) |
| PHSI➣Presbyterian Historical Society of Ireland |