| Acronym | Definition |
|---|
| O&A➣Out and About (various locations) |
| O&A➣Opie & Anthony (radio talk show) |
| O&A➣Once and Again (TV series) |
| O&A➣Over & Above |
| O&A➣Offer & Acceptance |
| O&A➣Ousadia e Alegria (Portuguese: Daring and Joy) |
| O&A➣Opportunities & Activities |
| O&A➣Organisation & Arrangements |