Domnovo (Russian: До́мново; German: Domnau; Polish: Domnowo; Lithuanian: Dumnava) is a rural locality (a settlement) in Pravdinsky District of Kaliningrad Oblast, Russia, located near the Poland–Russia border, about 40 kilometers (25 mi) southeast of Kaliningrad, the administrative center of the oblast, and 12 kilometers (7.5 mi) west of Pravdinsk, the administrative center of the district.

[1] German settlers arrived in the area probably during the 13th century and c. 1300 the Teutonic Order erected a castle (Ordensburg) to protect a crossroad here.

In 1440 the town joined the anti-Teutonic Prussian Confederation, at the request of which Polish King Casimir IV Jagiellon signed the act of incorporation of the region to the Kingdom of Poland in 1454.

[4] During the subsequent Thirteen Years' War, the castle was largely destroyed probably already in 1458, but still partially inhabited in 1474 and in the 19th century its cellar vaults were discovered adjacent to the town church.

After the war, per the peace treaty signed in Toruń in 1466, the town became a part of Poland as a fief held by the Teutonic Knights.