| Acronym | Definition |
|---|
| FAO | Financial Aid Officer |
| FAO | Food and Agriculture Organization (United Nations) |
| FAO | Financial and Administrative Officer (various organizations) |
| FAO | Finance and Accounting Outsourcing |
| FAO | Fabrication Assistée par Ordinateur |
| FAO | Ford Automotive Operations |
| FAO | For the Attention of |
| FAO | Fatty Acid Oxidation |
| FAO | Fonds voor Arbeidsongevallen (Belgium) |
| FAO | Foreign Area Officer |
| FAO | Foreign Affairs Office |
| FAO | France Appel d'Offre (French wedding service directory) |
| FAO | Financial Assistance Office (various organizations) |
| FAO | Frederick August Otto (Schwarz; FAO Schwarz toy stores) |
| FAO | Formation Assistée par Ordinateur |
| FAO | For the Account Of |
| FAO | Forward Artillery Observer (army) |
| FAO | Faro, Portugal - Faro (Airport Code) |
| FAO | Fonderies et Ateliers de l'Ouest (French: Foundries and Workshops of the West) |
| FAO | Fire Apparatus Operator |
| FAO | Field Audit Office (DCAA) |
| FAO | Fondation pour les Aînés de l'Outaouais (French: Foundation for Seniors in Ottawa; Ottawa, Canada) |
| FAO | Final Administrative Order (law) |
| FAO | Faculty Administrative Officer (various universities) |
| FAO | Francs Archers d'Ottignies (Belgian archery club) |
| FAO | Finance & Accounting Office(r) |
| FAO | For Addressee Only |
| FAO | Final Agency Order |
| FAO | Finish All Over |
| FAO | Fleet Administration Office (US Navy) |
| FAO | Flight Activity Officer |
| FAO | Forced Air Oil |
| FAO | Flugbüro Am Opernplatz (now FAO Travel) |
| FAO | Fiscal Affairs Office (EU) |
| FAO | Federal Archaeology Office (Canada) |
| FAO | Federal Approving Official |
| FAO | Forward Air Observer |
| FAO | First Africa Oil Plc (London, UK) |
| FAO | Fiscal Agent Organization (healthcare) |
| FAO | Floating Atomic Orbital |
| FAO | Fishermen's Advocacy Organization |
| FAO | Forward Area Officer (UK) |
| FAO | Field Artillery Operator |
| FAO | Field Air Only (paintball) |