| RFO | Radio Free Oz 
| Others |
| RFO | Radio Frequency Oscillator
| Others |
| RFO | Raffinose Family Oligosaccharides
| Others |
| RFO | Rage For Order
| Others |
| RFO | Ranch and Feedlot Operations
| Others |
| RFO | Ranch Feedlot Operations
| Others |
| RFO | Range Forest Officer
| Others |
| RFO | Raven Fox Organization
| Others |
| RFO | Read For Ownership
| Others |
| RFO | Ready For Occupancy
| Others |
| RFO | Ready for Operations
| Others |
| RFO | Real Estate Financial Options. Inc.
| Others |
| RFO | Real Flight Operations
| Others |
| RFO | Reason For Outage
| Others |
| RFO | Recovered Fuel Oil
| Others |
| RFO | Recovery Field Office
| Others |
| RFO | Recycled Fuel Oil
| Others |
| RFO | Regional Field Offices
| Others |
| RFO | Regional Forestry Office
| Others |
| RFO | Regional Framework Operative
| Others |
| RFO | Regularly Funded Organisations
| Others |
| RFO | Renewable Fuel Oil
| Others |
| RFO | Request For Offer
| Others |
| RFO | Request for Offers
| Others |
| RFO | Request For Opinion
| Others |
| RFO | Request for Order
| Others |
| RFO | Request For Orders
| Others |
| RFO | Requests for Offers
| Others |
| RFO | Requests for oversight
| Others |
| RFO | Research Facilitation Office
| Others |
| RFO | Reseau France Outre-Mer
| Others |
| RFO | Resident Faculty Organization
| Others |
| RFO | Residual fuel oil
| Others |
| RFO | Responsible Facility Official
| Others |
| RFO | Responsible Financial Officer
| Others |
| RFO | Restricted Flow Orifice
| Others |
| RFO | Retail Fulfillment Operations
| Others |
| RFO | Retained Foreign Objective
| Others |
| RFO | Revelation Fight Organization
| Others |
| RFO | Rfobasic Freeforums Org
| Others |
| RFO | Richard Friis Olsen
| Others |
| RFO | Right Foot Off
| Others |
| RFO | Ripple Federation Organization
| Others |
| RFO | Rising Force Online
| Others |
| RFO | Road Freight Operations
| Others |
| RFO | Robert Ferguson Observatory
| Others |
| RFO | Rocky Flats Office
| Others |
| RFO | Rogz Flying Object
| Others |
| RFO | Roxette Fan Organization
| Others |
| RFO | Royal Flying Officer
| Others |
| RFO | Rudder Flutter Online
| Others |
| RFO | Rune Find Olympics
| Others |