Natangians or Notangians (Prussian: Notangi; Polish: Natangowie; Lithuanian: Notangai; German: Natanger) was a Prussian clan, which lived in the region of Natangia, an area that is now mostly part of the Russian exclave Kaliningrad Oblast, whereas the southern portion lies in the Polish Warmian-Masurian Voivodeship.

In the 13th century, when the Teutonic Knights began their crusade against the Prussians, some 15,000 people might have lived in the area between the Pregolya and Łyna rivers.

[2] The Treaty of Christburg of early 1249, which assured personal freedom to newly converted Christians, included Natangians.

However, the treaty failed to address the underlying causes of the conflict, and Natangians massacred 54 knights in the Battle of Krücken in November 1249.

During the Great Prussian Uprising (1260–1274), the Natangians elected Herkus Monte, who was educated in Germany, as their chief.