Kallnach (French: Chouchignies) is a municipality in the Seeland administrative district in the Canton of Bern in Switzerland. On 1 January 2019 the former municipality of Golaten merged into the municipality of Kallnach.

Kallnach is first mentioned in 1231 as apud Calnachon.

Kallnach was the site of a Bronze Age foundry as well as a small Roman era settlement or way station. The Roman road from Aventicum to Augusta Raurica or Vindonissa passed through Kallnach. A graveyard in Bergwegs indicates that the area was inhabited during the Early Middle Ages.