| TFO | TACS Flying Object 
| Others |
| TFO | Tactical Flight Officer
| Others |
| TFO | Tandem Free Operation
| Others |
| TFO | Task Force Officer
| Others |
| TFO | Tax and Finance Operate
| Others |
| TFO | TCP Fast Open
| Others |
| TFO | Tecmo Fantasy Owners
| Others |
| TFO | Temple Fork
| Others |
| TFO | Temple Fork Outfitters
| Others |
| TFO | Tenant Fit-Out
| Others |
| TFO | The Factory Outlet
| Others |
| TFO | The Family Office
| Others |
| TFO | The Family Only
| Others |
| TFO | The Film Orchestra
| Others |
| TFO | The Flirble Organisation
| Others |
| TFO | The Florida Orchestra
| Others |
| TFO | The Forgotten Ones
| Others |
| TFO | The Fowl One
| Others |
| TFO | The French One
| Others |
| TFO | The Front Office
| Others |
| TFO | The Future Online
| Others |
| TFO | Thomson Family Orthodontics
| Others |
| TFO | Tire Factory Outlet
| Others |
| TFO | Touch Football Ontario
| Others |
| TFO | Transcoder Free Operation
| Others |
| TFO | Transfer From Oas
| Others |
| TFO | Transportation Funding Options
| Others |
| TFO | Trauma from Occlusion
| Others |
| TFO | Triplex Forming Oligonucleotide
| Others |
| TFO | Triplex Forming Oligonucleotides
| Others |
| TFO | Tritium and Fiber Optic
| Others |
| TFO | Tritium and fiber optics
| Others |
| TFO | Tritium Fiber Optic
| Others |
| TFO | Tritium Fiber Optics
| Others |
| TFO | Trouble Free Operation
| Others |
| TFO | Trust Fund Operations
| Others |
| TFO | Twisted Fate Online
| Others |