Burgistein is a municipality in the administrative district of Thun in the Canton of Bern in Switzerland .

Burgistein is first mentioned in 1266 as Burgstein and in 1271 as Burgenstein.

The oldest traces of a settlement in the area include scattered neolithic artifacts and Roman coins. During the Early to High Middle Ages there was a hill fort on Bühlhölzli hill. Across from Bühlhölzli, on Schönegg hill, are the ruins of Blankenberg Castle, which was demolished in the second half of the 14th century. During the 13th century, Jordan I of Thun began buying up farming villages and land in the Gürbetal and surrounding valleys.