Baierbrunn is a municipality in the district of Munich in the south-German state Bavaria.

It is located between Schäftlarn and Pullach on the Bundesstraße 11 and consists of the two villages Baierbrunn and Buchenhain.

Some remains of a hillfort from the Early Middle Ages, called Birg, can be found on the area of the municipality of Baierbrunn.

The earliest known mentioning of Baierbrunn was in 776 on a deed of gift from Kloster Schäftlarn.

There used to be a ski slope until late 1930's, which remains are still visible today in the south of Baierbrunn.