Teplen is a village in Hadzhidimovo Municipality, in Blagoevgrad Province, Bulgaria.

In an Ottoman tax register for the Western Rhodopes from 1499 - 1502, it is mentioned that the population of the village was already Muslim.

In the 19th century, Teplen was a Muslim village in Nevrokop (the old name of the town of Gotse Delchev) kaza of the Ottoman Empire.

In the "Ethnography of the vilayets of Adrianople, Monastir and Salonica", published in Constantinople in 1878 and reflecting the statistics of the male population of 1873, Téplen is listed as a village with 45 households and 130 Pomac inhabitants.

According to Stefan Verković, at the end of the 19th century Teplen had a Muslim male population of 156 people living in 45 houses.