| Acronym | Definition |
|---|
| TMO➣Thermo Fisher Scientific (various locations) |
| TMO➣T-Mobile |
| TMO➣The Mac Observer (website) |
| TMO➣Timeout (Hekimian) |
| TMO➣Technologies Management Office |
| TMO➣Transformation Management Office |
| TMO➣Toprak Mahsulleri Ofisi (Soil Products Office of Turkey) |
| TMO➣Tenant Management Organisation (UK) |
| TMO➣Traffic Management Office |
| TMO➣Television Match Official (rugby) |
| TMO➣Transition Management Office (various organizations) |
| TMO➣True Mechanical Override (flush operation) |
| TMO➣Transportation Management Office |
| TMO➣Take Me Out |
| TMO➣Traffic Management Officer |
| TMO➣The Matrix Online (game) |
| TMO➣That's My Opinion |
| TMO➣Tracking of Moving Objects (navigation) |
| TMO➣Table Mountain Observatory |
| TMO➣The Metal Observer (website) |
| TMO➣Travel Management Online (software) |
| TMO➣Technology Management Office |
| TMO➣Trunked Mode Operation |
| TMO➣Thermophilic Microorganism (biotechnology) |
| TMO➣Telegraphic Money Order |
| TMO➣Tokimeki Memorial Online (gaming) |
| TMO➣Too Many Options |
| TMO➣Telephone Money Order |
| TMO➣Trans-Metro Optical (Cyras Systems) |
| TMO➣Total Mad Ownage |
| TMO➣Transportation Movements Office(r) |
| TMO➣Troubles Moteurs de l'Oesophage (French: esophageal motor disorders) |
| TMO➣Thermo Magnetic Optical (media) |
| TMO➣Transaction Management Object (multi-user environments) |
| TMO➣Ten Miles Out (aviation) |
| TMO➣Trials Management Organization |
| TMO➣Text Messaging Operations |
| TMO➣Tactical Management Office |
| TMO➣Talent Management Organization |
| TMO➣The McCallum Observer |
| TMO➣Total Materiel Objective |