It is bordered by the Adriatic Sea in the west, the Ionian Sea in the southwest, the Mediterranean Sea in the south and east, and the Black Sea in the northeast.
The peninsula, a major region in Southeast Europe, is divided between twelve countries.
The countries of the Balkan Peninsula are:
- Albania
- Bosnia and Herzegovina
- Bulgaria
- Croatia
- Greece
- Kosovo
- Montenegro
- North Macedonia
- Romania
- Serbia
- Slovenia
- Turkey