O&A
| 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 |