KOA
| Acronym | Definition |
|---|---|
| KOA | Kampground of America |
| KOA | Knights of the Altar (religious organization) |
| KOA | Kajima Overseas Asia |
| KOA | Konami of America |
| KOA | Kansas Optometric Association |
| KOA | Kona, HI, USA - Keahole (Airport Code) |
| KOA | Kostenart (German: Cost Category) |
| KOA | Kustoms of America |
| KOA | KMI Operating Account |