Cyril and Methodius National Library (Bulgarian: Национална библиотека „Свети Свети Кирил и Методий“, romanized: Natsionalna biblioteka "Sveti Sveti Kiril i Metodiy") is the national library of Bulgaria,[1] situated in the capital city of Sofia.

It was designed by the famous Bulgarian architectural team Vasilyov-Dimitur Tsolov and completed in the period 1940–1953.

[citation needed] In 1953, the National Library opens its new building under the name "Vasil Kolarov".

Among the first entries were the rich personal libraries of the historian Prof. Marin Drinov and the poet Petko Slaveikov, as well as collections from different churches and monasteries.

Two collections were formed in the National Library – consisting of Bulgarian and of Oriental documents respectively.