Klæbu is a former municipality in Trøndelag county, Norway. It existed from 1838 until its dissolution in 2020 when it was incorporated into the neighboring Trondheim Municipality. It was located in the southern part of the Trondheim Region, about 20 kilometres (12 mi) south of the city of Trondheim. The administrative center was the village of Klæbu. The other major village in Klæbu Municipality was Tanem.