CBNA may refer to:
- CBNA (AM), a radio station (600 AM) licensed to St. Anthony, Newfoundland and Labrador, Canada
- Citibank National Association, a bank headquartered in New York City, United States, backing a lot of store credit cards
- Coe-Brown Northwood Academy, a high school in Northwood, New Hampshire, United States
- Community Bank, N.A., a bank servicing Upstate New York and Northeastern Pennsylvania
- Citibank, N.A., a multinational bank
- Cannabinolic acid, a cannabinoid
