| ODTA | Oahu District Tennis Association 
| Others |
| ODTA | Omaha Dance Teachers Association
| Others |
| ODTA | Omeo District Tennis Association
| Others |
| ODTA | Ontario Disability Tax Agency
| Others |
| ODTA | Ontario Dump Truck Association
| Others |
| ODTA | Open Development Technology
| Others |
| ODTA | Open Development Technology Alliance
| Others |
| ODTA | Open Distributed Telecommunication Architecture
| Others |
| ODTA | Optical differential thermal analysis
| Others |
| ODTA | Ordered Data Tree Automata
| Others |
| ODTA | Organization Defense Travel Administrator
| Others |
| ODTA | Organizational Defense Travel Administration
| Others |
| ODTA | Organizational Defense Travel Administrator
| Others |
| ODTA | Organizational Defense Travel Administrators
| Others |