| ODCS | Office of Deputy Chief of Staff
| Others |
| ODCS | Old Dominion Christian School
| Others |
| ODCS | Old Dominion Chrysanthemum Society
| Others |
| ODCS | Omni Directional Cell Site
| Others |
| ODCS | On Demand Compose Service
| Others |
| ODCS | Open Door Christian School
| Others |
| ODCS | Open Door Christian Schools
| Others |
| ODCS | Open Doors Community School
| Others |
| ODCS | Open Doors Computer Services
| Others |
| ODCS | Oracle Developer Cloud Service
| Others |
| ODCS | Oracle Document Cloud Service
| Others |
| ODCS | Oracle Document Cloud Services
| Others |
| ODCS | Oracle Documents Cloud Service
| Others |
| ODCS | Oral Dental and Craniofacial Sciences
| Others |
| ODCS | Ottawa Dance Centre Schools
| Others |
| ODCS | Over Draft Control Systems
| Others |