Koa (disambiguation)
Koa is a species of tree endemic to Hawaii.
Koa or KOA may also refer to:
- Guwa language, or Koa, an Australian language
 - Kampgrounds of America, a franchise chain of North American campgrounds
 - KCNC-TV, an American television station, which used the callsign KOA-TV from December 24, 1953 until August 1983
 - KOA (AM), an American radio station
 - KOA Corporation of Japan
 - Koa people (Guwa), an Aboriginal Australian people
 - IATA code KOA Kona International Airport, Hawaii
 - Konami of America, the North American subsidiary of Konami, later known as Konami Corporation of America
 - Koya language, or Koa, a language of India
 - Kick Off Association, an organization for fans of the soccer simulation computer game Kick Off
 - Kingdoms of Amalur: Reckoning, a 2012 video game