Kirchenthurnen is a former municipality in the Bern-Mittelland administrative district in the Canton of Bern in Switzerland . On 1 January 2020 the former municipalities of Kirchenthurnen, Lohnstorf and Mühlethurnen merged to form the municipality of Thurnen.

Kirchenthurnen is first mentioned in 1228 as Tornes. Until 1860 it was known as Thurnen. The name was changed to prevent confusion with the municipality of Mühlethurnen.

The oldest trace of a settlement in the area are several Hallstatt era graves discovered at the Ried gravel pit.