Brunnadern is a village in the municipality of Neckertal in the Wahlkreis (constituency) of Toggenburg in the canton of St. Gallen in Switzerland.

Brunnadern was an independent municipality until January 1, 2009, when it merged with Mogelsberg and St. Peterzell to form the municipality of Neckertal.

See also

• Brunnadern-Neckertal railway station