Ambialet (French pronunciation: [ɑ̃bjalɛ]) is a commune of the Tarn department in southern France.

Ambialet's castle was a stronghold of the Cathars and was sacked during the Middle Ages by Simon de Montfort.

It is also home to a study abroad campus of Saint Francis University, Loretto, Pennsylvania.

Classes are held in the centuries-old former Franciscan Monastery in Ambialet, and during visits to Barcelona, Spain and Paris, France.

This Tarn geographical article is a stub.