| Acronym | Definition |
|---|
| MFO➣Multinational Force and Observers (US DoD) |
| MFO➣Mathematisches Forschungsinstitut Oberwolfach (German: Oberwolfach Mathematical Research Institute; est. 1944) |
| MFO➣Matratzen Factory Outlet (German: Factory Matress Outlet) |
| MFO➣Mixed Function Oxidase |
| MFO➣Multi-Family Office |
| MFO➣Marine Fuel Oil |
| MFO➣Medium Fuel Oil |
| MFO➣Michigan Film Office (Lansing, MI) |
| MFO➣Municipal Finance Officer (various locations) |
| MFO➣Men from Off (harmony group; UK) |
| MFO➣Mace Francis Orchestra |
| MFO➣Make Friends Online (dating website) |
| MFO➣Mission Field Outreach (ministry) |
| MFO➣Microfinance Organization |
| MFO➣Male, Female, Other |
| MFO➣Manufacturing Footprint Optimization (various companies) |
| MFO➣Military Family Outdoor (Sierra Club) |
| MFO➣Mazhar Fuat Özkan (band) |
| MFO➣Melbourne Film Office (Australia) |
| MFO➣Mr. Fixit Online (gamer site) |
| MFO➣Must Finish On (project management) |
| MFO➣Multiple Facility Organization |
| MFO➣Maine Film Office |
| MFO➣Multinational Force & Observers Medal |
| MFO➣Market Facilitation Organization |
| MFO➣Michael Fassbender Online (fansite) |
| MFO➣Management Field Observation (various organizations) |
| MFO➣Multicast Fan-Out |
| MFO➣Multi-Function Oxidase (immunology) |
| MFO➣Maintenance Free Operations |
| MFO➣Materiel Fielding Operations |
| MFO➣Master Frequency Oscillator |
| MFO➣Multi-Frequency - Originating (telephony) |
| MFO➣Maintenance Free Operating Period |
| MFO➣Mandatory Family Outing |
| MFO➣Medical Flight Officer |