Güssing (German pronunciation: [ˈɡʏsɪŋ] ⓘ; Hungarian: Németújvár, Német-Újvár, Croatian: Novi Grad) is a town in Burgenland, Austria.

Despite the threat of invasion Güssing prospered, with residents of the town at the time including the Artois botanist Carolus Clusius, and Johann Manlius, a typographer.

The lords of Güssing (in Hungarian: Kőszeg, in Slovak: Kysak) were a noble family in the frontier region of Austria and the Kingdom of Hungary.

Note that Kőszeg is the name of a nearby Hungarian town (known as Güns in German) to which that family moved its residence from Güssing in 1274.

In 1540, Franz Batthyány gained the magnate from Ferdinand I, the incumbent king of Hungary, Croatia and Bohemia, which allowed him to open up ore mines, whilst in 1549, he was granted the right to hold markets in the town by the emperor.

[4] The town is situated in the south of Burgenland, close to the Hungarian border, in the valley of the river Strem at a height of 229 metres above sea level.

The town is neighboured by Tobaj to the north, Strem to the east, Heiligenbrunn to the southeast, Kleinmürbisch and Großmürbisch to the south, Neustift bei Güssing to the southwest and Gerersdorf-Sulz to the northwest.

The Güssing fish ponds are a designated Ramsar site within the town, known for its bird populations of little bittern, grey heron and great crested grebe.