Neunkirchen is a town and a municipality in Saarland, Germany. It is the largest town in, and the seat of the district of Neunkirchen. It is situated on the river Blies, approx. 20 km northeast of Saarbrücken. With about 50,000 inhabitants, Neunkirchen is Saarland's second largest city.

Schloss Jägersberg (English: Jägersberg palace) was a baroque Schloss in Neunkirchen in Saarland, Germany. It served as a hunting lodge and summer palace for the princes of Nassau-Saarbrücken. Designed by architect Friedrich Joachim Stengel in 1752, it was destroyed between 1793 and 1822. Except some small remains, nothing remembers anymore of the palace and its garden.