Bad Füssing (Central Bavarian: Fiassing) is a municipality in the district of Passau in Bavaria in Germany.

Located some 3 km from the river Inn, which creates a border to Austria.

Known for its thermal baths, Bad Füssing is part of the Lower Bavarian Spa Triangle.

The sulphurous water source of 56°C was found in 1938 in a depth of about 1 km when drilling for oil.

[5] This Passau district location article is a stub.