| KOA | AM-850, Denver, Colorado 
| Others |
| KOA | Kajima Overseas Asia
| Others |
| KOA | Kampers Of America
| Others |
| KOA | Kampground of America
| Others |
| KOA | Kampgrounds Of America
| Others |
| KOA | Kamping On Asphalt
| Others |
| KOA | Kansas Optometric Association
| Others |
| KOA | Keahole - Kona International Airport, Kona, Hawaii USA
| Others |
| KOA | Keck Observatory Archive
| Others |
| KOA | Keep On Adding
| Others |
| KOA | Keeps On Adding
| Others |
| KOA | Kentucky Optometric Association
| Others |
| KOA | Kids Of America
| Others |
| KOA | Kiezen Op Afstand
| Others |
| KOA | Killers Of All
| Others |
| KOA | Kind Of Amazing
| Others |
| KOA | Kind Of Arrogant
| Others |
| KOA | Kind Of Awful
| Others |
| KOA | Kindred Of Azeroth
| Others |
| KOA | King Of Apples
| Others |
| KOA | Kings Of Age
| Others |
| KOA | Kings Of Automotive
| Others |
| KOA | Kinship Of Australia
| Others |
| KOA | Kitchen Of Asia
| Others |
| KOA | Knights Of Ares
| Others |
| KOA | Knights Of the Alliance
| Others |
| KOA | Knights of the altar
| Others |
| KOA | Knights Of the Apocalypse
| Others |
| KOA | Konami of America
| Others |
| KOA | Kongsberg Automotive
| Others |
| KOA | Kopen Op Afstand
| Others |
| KOA | Krappen Old Adventure
| Others |
| KOA | Kustoms Of America
| Others |
| KOA | Kustoms Of Australia
| Others |