OCDA
| Acronym | Definition |
|---|---|
| OCDA | Orange County District Attorney (California) |
| OCDA | Ohio Choral Directors Association |
| OCDA | Ozark Cave Diving Alliance |
| OCDA | Oregon Career Development Association |
| OCDA | Office of Cross-Disciplinary Activities (National Science Foundation) |
| OCDA | Oklahoma Civil Defense Agency (Oklahoma City, OK) |