KBA may refer to:
- The Korea Baduk Association (Hanguk Kiwon)
- The Korea Baseball Association
- The Korea Basketball Association
- The Koenig & Bauer AG
- The Korea Buddhist Alliance, a pseudo party in North Korea
- The Knowledge-based authentication, a method of authentication which seeks to prove the identity of someone accessing a service.
- The Kenn Borek Air, an airline based in Calgary, Alberta, Canada.