Horrenbach-Buchen is a municipality in the administrative district of Thun in the canton of Bern in Switzerland.

Originally the small farming villages that make up Horrenbach-Buchen were part of the Herrschaft of Heimberg under the House of Kyburg.

After a failed raid on Solothurn on 11 November 1382 and the resulting Burgdorferkrieg, the Kyburgs lost most of their lands, including Horrenbach-Buchen, to Bern in 1384.

[3] Traditionally the farmers of the villages practiced seasonal alpine herding with limited farming on the high valley floor.

Today many of the residents commuted to jobs in Thun, while many of the remainder work in tourism.

[5] The municipality is located in the mountains on the left side of the Zulg river valley.

On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Thun.

[6] The blazon of the municipal coat of arms is Gules between two Mullets Argent on a Bend of the same three Beech Leaves.

In 2012, single family homes made up 27.8% of the total housing in the municipality.

[14] The historical population is given in the following chart:[3][15][16] As of  2011[update], Horrenbach-Buchen had an unemployment rate of 0.31%.

[11] There were 105 residents of the municipality who were employed in some capacity, of which females made up 35.2% of the workforce.

In the tertiary sector; 3 were in wholesale or retail sales or the repair of motor vehicles, 3 were in a hotel or restaurant and 4 were in health care.

In the federal election, a total of 124 votes were cast, and the voter turnout was 66.3%.

[23] From the 2000 census[update], 201 or 90.5% belonged to the Swiss Reformed Church, while 8 or 3.6% were Roman Catholic.