Muzeum Bitwy pod Grunwaldem, History museum in Stębark, Poland.

The Grunwald Battle Museum in Stębark occupies 275 m² beneath the oval arena of an amphitheatre, whose floor shows the layout of the opposing armies before the battle. Its permanent exhibition, "The Great War with the Teutonic Order 1409–1411", presents the conflict between the Kingdom of Poland and the Grand Duchy of Lithuania on one side and the Teutonic Order on the other. Six projection screens show armour and army movements, and a cinema room screens a 23-minute film, "Krzyżuacy".

The museum was founded in 1960 for the 550th anniversary of the 1410 Battle of Grunwald between the Polish-Lithuanian forces and the Teutonic Order. For years it operated as a branch of other state museums, and in 2011 it became an independent cultural institution. Its permanent exhibition is titled "The Great War with the Teutonic Order 1409–1411".

The site is closely tied to annual reenactments where visitors witness medieval combat, knightly tournaments, and period demonstrations on the museum grounds. These events keep the battle's memory alive in local traditions.

The museum offers guided tours in several languages, and visitors should book in advance to secure a place. The grounds become particularly busy on days with special events, offering more to experience for those who prefer interactive history.

The museum building stands beneath the oval arena of an amphitheatre, whose floor shows how the two armies were drawn up before the battle began. Six projection screens present the weapons and the movements of the troops. Since 2014 excavations on the field have yielded spearheads, swords and armour fragments, which are shown to visitors.