The title of this article is ambiguous. For other meanings, see Gotha (disambiguation).

Gotha is the fifth largest city in the Free State of Thuringia and the county seat of the Gotha district. Gotha was the residential town of the Duchy of Saxony-Gotha-Altenburg from 1640 to 1825 and the capital and residential town of the Duchy of Saxony-Coburg and Gotha from 1826. In 1820 the German insurance industry was founded in the city with the Gothaer insurance company. In 1875, the Socialist Workers' Party of Germany (SAP), which later changed its name to SPD, was founded in Gotha's Tivoli. The city was a center of German publishing, so the publishing house Justus Perthes, founded in 1785, mainly cartographic publications (maps, atlases, wall maps, etc.) were produced.

In the past, the medium-sized town of Gotha was in rivalry with Weimar, the other centre of the Ernestine dynasty. While Weimar became the artistic centre, Gotha became its natural science counterpart, as witnessed today by the Natural History Museum and the Gotha Observatory, among others. The baroque Friedenstein Palace dominates the townscape. It was the residence of the Dukes of Saxe-Gotha-Altenburg until 1825, and from then until 1918 of those of Saxe-Coburg and Gotha.

A larger company from Gotha was the Gothaer Waggonfabrik, which produced mainly trams and aircraft. Today, Gotha is home to the Gotha tramway and the Thüringerwaldbahn, one of the last interurban tramways in Germany (to Waltershausen and Tabarz).

Gotha is the seat of the Thuringian University of Applied Sciences for Public Administration; two of the three departments are located here.