PSAO
| Acronym | Definition |
|---|---|
| PSAO | Penn State Anime Organization |
| PSAO | Permanent Staff Administration Officer (UK) |
| PSAO | Pea Seedlings Amine Oxidase |
| PSAO | Prescribed Statement of Actuarial Opinion |
| PSAO | Primary Staff Action Officer |
| PSAO | Pharmacy Services Administration Organization |