Biersdorf am See is a municipality in the district of Bitburg-Prüm, in Rhineland-Palatinate, western Germany.

The place is located in the South Eifel nature park, northwest of the district town of Bitburg on the Bitburg reservoir, which is located in the west of the municipality.

The 3.22 km² large municipal area extends at an altitude of 280 to 340 m above sea level.

[3] Like large parts of the Bitburger Gutland, Biersdorf am See was already settled in pre-Christian times, as indicated by barrows and ceramic finds.

Several sanded burial mounds on a ridge south-east of the Steifelstein have been proven.