The market town of Bad Fischau-Brunn is an Austrian municipality in the district of Wiener Neustadt-Land in Lower Austria.

Bad Fischau-Brunn is divided into two Katastralgemeinden:[3] The oldest traces of settlement in the area of the municipality date back to the Hallstatt culture (8th-6th century BC).

However, it lost its importance after Wiener Neustadt, founded at the end of the 12th century, became the site of the mint.

[4] Exploitation of the mineral springs of Fischau took a rise in 1872, when the spa resort (Kristalltherme) was opened.

[4] The current market town was formed in 1969 by merging the municipalities of Brunn an der Schneebergbahn and Bad-Fischau.