Bad Soden-Salmünster (German: [baːt ˈzoːdn̩ zaːlˈmʏnstɐ] ⓘ) is a town in the Main-Kinzig district, in Hesse, Germany.

[3] From the north, clockwise, the neighbouring municipalities are: Birstein, Steinau an der Straße, Gutsbezirk Spessart (an unincorporated area surrounding the Stadtteil of Alfeld), Bad Orb, Wächtersbach and Brachttal.

It also borders on Forst Aura [de] (another unincorporated wooded area and part of the Main-Spessart district of Bavaria) and Jossgrund.

Town rights were bestowed in 1296 (Soden, but called Stolzenthal) and 1320 (Salmünster), by King Adolf and Emperor Ludwig, respectively.

The springs and the village were mortgaged by the abbot of Fulda to the lords of Hutten in 1330, who initially lived at Stolzenfels before moving to a new palace in the mid-16th century.

Alsberg and Hausen were merged with Salmünster on 1 January 1970 followed by Kerbersdorf and Romsthal on 1 December 1970 and Katholisch-Willenroth on 1 July 1972.

At Ahl, the Kinzig is dammed by the Kinzigtalsperre [de], which serves both to control floods and to generate hydroelectric power.

Like in other communities in the area, such as Biebergemünd, Flörsbachtal, Bad Orb and Jossgrund, there is currently controversy over plans to build additional towering wind farms on the wooded peaks.