Kotel (Bulgarian: Котел [ˈkɔtɛɫ]) is a town in central Bulgaria, part of Sliven Province.

[1] Kotel is known for the numerous personalities of the Bulgarian National Revival who are connected to the town in various ways, such as the politicians Alexander Bogoridi and Stefan Bogoridi, the enlighteners Sophronius of Vratsa and Petar Beron, public figure Gavril Krastevich, revolutionary Georgi Rakovski, as well as the World War II prime minister Dobri Bozhilov.

It has a well-known music school and a large Romani population who can be found playing in restaurants and orchestras all over Bulgaria.

Because of its location in the mountains, Kotel is also a popular health resort for the cure of diseases such as tuberculosis.

Kotel was settled during the beginning of the Ottoman occupation of Bulgaria, when people fled from neighboring cities and towns.