| ORD | Office Of Research And Development (USEPA) | - | Computer Acronyms(common) |
| ORD | Optical Rotatory Dispersion | - | Computer Acronyms(common) |
| ORD | Operational Readiness Date | - | Organizations |
| ORD | Operational Ready Data | - | Organizations |
| ORD | Operational Requirements Document | - | Organizations |
| ORD | Orbital Requirements Document | - | Organizations |
| ORD | Ordnance | - | Organizations |
| ORD | Office Of Research And Development - Operational Requirements Document | - | Astronomy |
| ORD | O'hare International Airport In Chicago | - | Astronomy |
| ORD | Office Of Research And Development | - | Business and Finance |
