| Acronym | Definition |
|---|
| ROO➣Kangaroo (short form) |
| ROO➣Refined Olive Oil |
| ROO➣Rules of Origin |
| ROO➣Rub One Out |
| ROO➣Right of Occupancy (legal right; various locations) |
| ROO➣Read Only Operand |
| ROO➣Royal Oak Offshore (watch) |
| ROO➣Renewables Obligation Order (UK) |
| ROO➣Return on Objective |
| ROO➣Rules Of Order |
| ROO➣Real Object Oriented (computer programming) |
| ROO➣Return On Opportunity |
| ROO➣Recruiting Operations Officer (US Army Cadet Command) |
| ROO➣Regional Outreach Officer (Australia immigration) |
| ROO➣Richland Operations Office |
| ROO➣Record of Origin (Intel) |
| ROO➣Reserve Officer Orientation |
| ROO➣Research Opportunities Office (various schools) |
| ROO➣Rail Ordnance Officer (Australia) |