Karabörtlen is a neighborhood in Ula District, in Muğla Province, Türkiye. Karabörtlen lies 0.3 km from the Marçal Dağları mountains. It has 1,654 inhabitants (2022). The nearest city is Muğla, 23 km to the northwest. Among the landmarks around are Kaunos (26 km), Cyllandus (6.1 km) and Sedir Island (27 km).
Also written Karaböğürtlen.