Schwarzenborn is the smallest town in Hesse, Germany. It lies in the Schwalm-Eder district some 13.5 km from Homberg in the Knüll. Through the constituent community of Grebenhagen flows the river Efze. The town consists of the two centres of Grebenhagen and Schwarzenborn.

Schwarzenborn's civic coat of arms might be heraldically described thus: Argent a goat-headed spreadeagle sable langued gules, surmounted by an inescutcheon sable a mullet of six Or.

Schwarzenborn's arms bear a likeness to both Neukirchen's and Schwalmstadt's. All three have the goat-headed spreadeagle and a star on the inescutcheon (small shield within the bigger one), but colouring varies among the three.

• Saint-Gervais-sur-Roubion, France since 7 May 2005

The town is well known for being a Bundeswehr base with a large training area, furnishing some 300 jobs to local civilians, making the Bundeswehr the town's biggest employer. The garrison is home of the Jägerbataillon 1 (1st Ranger battalion) which is part of the Panzerbrigade 21 based in Augustdorf.

The Hersfeld-West Autobahn interchange on the A 7 (Kassel – Würzburg) is about 15 km away.

Schwarzenborn is joined to the railway network through the stations at Schwalmstadt-Treysa and Bad Hersfeld.

• Schwarzenborn