| Acronym | Definition |
|---|
| MWO➣Mech Warrior Online (gaming) |
| MWO➣MechWarrior Online (gaming) |
| MWO➣Mount Washington Observatory (New Hampshire) |
| MWO➣Model World Object |
| MWO➣Microwave Oven |
| MWO➣Master Warrant Officer |
| MWO➣Modification Work Order |
| MWO➣Multi Wave Oscillator |
| MWO➣Miss World |
| MWO➣Meteorological Watch Office (aviation) |
| MWO➣Maritime Warfare Officer (Australia) |
| MWO➣Militaire Willems Orde |
| MWO➣Maintenance Work Order |
| MWO➣Military Welfare Office |
| MWO➣Moshing World Order (music promotional service in Toledo, Ohio) |
| MWO➣Mystic World Online (gaming) |
| MWO➣Material Work Order |
| MWO➣Missile Warning Officer |
| MWO➣Maganic Wars Online (multiplayer role-playing game) |
| MWO➣Movement Warning Order (US DoD) |
| MWO➣Minimum Work Obligation |
| MWO➣Multiple Weighted Objective |
| MWO➣Metal Working Oil |
| MWO➣Mediterranean Wetlands Observatory (collaborative development project) |