| Acronym | Definition |
|---|
| NRO | National Review Online |
| NRO | National Reconnaissance Office |
| NRO | National Reconciliation Ordinance (Pakistan) |
| NRO | New Rochelle (Amtrak station code; New Rochelle, NY) |
| NRO | Number Resource Organization |
| NRO | New Restaurant Opening (various organizations) |
| NRO | Nobeyama Radio Observatory |
| NRO | New Republic Online |
| NRO | Nicht-Regierungsorganisation (German: Non-Governmental Organization) |
| NRO | Non-Resident Ordinary Rupee |
| NRO | Non Repudiation of Origin (electronic commerce) |
| NRO | National Race Officer (sailing; various locations) |
| NRO | Non-Rotating Origin (astronomy) |
| NRO | Non Routine Operation (gas distribution) |
| NRO | Northern Desert of Ro (Everquest) |
| NRO | National Radio Observatory |
| NRO | Network Rollout |
| NRO | Not Reoffered |
| NRO | National Recycling Operations (The Salvation Army, Canada) |
| NRO | National Regional Office |
| NRO | Numbering Resources Optimization (working group) |
| NRO | No Reorder (status) |
| NRO | Non-Recorded Option (academics) |
| NRO | Naval Reconnaissance Office |
| NRO | Navy Retail Office |
| NRO | National Relief Organization (Somalia) |
| NRO | Net Repair Objective |