Teufelsmühle, Mountain summit in the northern Black Forest, Germany

Teufelsmühle is a 908.3-metre summit in the northern Black Forest, standing between the Murg valley to the west and the Alb valley to the east; the Alb rises near its eastern flank. Its plateau of Buntsandstein runs north to south and carries the boundary between Gernsbach and Loffenau. On the summit stand a 16.2-metre observation tower and the Teufelsmühle mountain inn.

The Teufelsmühle Tower was erected on the summit plateau in 1910 at a height of 10 metres. In 1952 it was raised to 16.2 metres, and in 1958 a building annex was added that was later expanded into a hiker's inn. Tower and mountain inn together form the hamlet of Teufelsmühle, part of Loffenau.

The name Teufelsmühle comes from local folklore about scattered boulders thought to be leftovers from a mill built by the devil himself. Such legends still shape how people today experience and speak about this mountain.

The mountain has a designated launch site at 850 meters elevation for hang gliders and paragliders with a landing zone 550 meters below. Visitors should know that conditions vary greatly depending on weather and wind patterns throughout the day.

The Teufelsmühle Tower carries a plaque showing Hubertus Waldteufel, the pen name of local poet Emil Dietz (1879–1957), who spent his last years in Bad Herrenalb-Zieflensberg. The Waldteufelweg in the Upper Gaistal is named after him. A second hang-glider launch site was cleared directly on the summit plateau in 2015, on the Gernsbach side.