Sinntal is a municipality in the Main-Kinzig district, in Hesse, Germany.

Sinntal is located around 30 km south of Fulda in the Main-Kinzig district of Hesse.

[3] Sinntal is located right at the border between Hesse and Bavaria.

Sinntal consists of the following Ortsteile: Sinntal borders on (from the north, clockwise): Kalbach (Hesse), Motten, the unincorporated area Mottener Forst-Süd [de], Bad Brückenau, Zeitlofs, the unincorporated area Roßbacher Forst [de], Obersinn (all Bavaria), the unincorporated area Gutsbezirk Spessart (Hesse) and Schlüchtern (Hesse).

Sinntal lies on the Hanover-Würzburg high-speed rail line.