| Acronym | Definition |
|---|
| PAO➣Public Affairs Office(r) |
| PAO➣Paoli (Amtrak station code; Paolia, PA) |
| PAO➣Publication Assistée par Ordinateur (French: desktop publishing) |
| PAO➣Periodicals Archive Online |
| PAO➣Postacademisch Onderwijs (Dutch: Postgraduate Education) |
| PAO➣Public Attorney's Office (Philippines) |
| PAO➣Public Aircraft Operations |
| PAO➣Period After Opening |
| PAO➣Periacetabular Osteotomy (hip surgery) |
| PAO➣Panathinaikos Athlitikos Omilos (Panathinaikos Athletic Club) |
| PAO➣Public Assistance Officer (US FEMA) |
| PAO➣Privacy Act Office (US DHHS) |
| PAO➣Planetary Activation Organization (El Dorado Hills, CA) |
| PAO➣Production Assistée par Ordinateur (French) |
| PAO➣Programme Authorising Officer (EU programs) |
| PAO➣Pacific Area Office |
| PAO➣Pro Arte Orchestra (various locations) |
| PAO➣Portland Area Office (various businesses) |
| PAO➣Program Action Office (US Air Force) |
| PAO➣Philippine Academy of Ophthalmology (Makati City, Philippines) |
| PAO➣Polyalphaolephin |
| PAO➣Provider Access Organization (healthcare) |
| PAO➣Post-Award Orientation (federal contracts) |
| PAO➣Poker Academy Online |
| PAO➣Phased-Array Optics (nanotechnology) |
| PAO➣Potencial de Agotamiento de Ozono (Spanish for ODP) |
| PAO➣Project Administration Office(r) |
| PAO➣Program Analysis Office |
| PAO➣Phosphorus-Accumulating Organism (environmental engineering) |
| PAO➣Polynesian Limited Samoa (ICAO code) |
| PAO➣Property Accounting Office |
| PAO➣Project Action Officer |
| PAO➣Planning and Analysis Officer |
| PAO➣Primary Action Officer |
| PAO➣Pan-African Organization |
| PAO➣Postulated Abnormal Occurrence |
| PAO➣Pediatric Assessment Online |
| PAO➣Phased Air Operation |
| PAO➣Psychiatric Assignment Officer |
| PAO➣Periodical Aromatic Odor |
| PAO➣Palo Alto, California Municipal Airport (Airport Code) |
| PAO➣Primary/Program Action Office(r) |
| PAO➣Physical Aggression toward Others (psychology) |