Belarus–Lithuania border in the context of "Neman"

The Neman (based on Russian spelling), Nioman (Belarusian), Nemunas (Lithuanian), Niemen (Polish), or Memel (German), is a river in Europe that rises in central Belarus and flows through Lithuania then forms the northern border of Kaliningrad Oblast, Russia's western exclave, which specifically follows its southern channel. It drains into the Curonian Lagoon, narrowly connected to the Baltic Sea. The 937 km (582 mi) long Neman is a major Eastern European river. It flows generally west to Grodno within 12 kilometres (7.5 mi) of the Polish border, north to Kaunas, then westward again to the sea.

The largest river in Lithuania, and the third-largest in Belarus, it is navigable for most of its length. It starts from two small headwaters merging about 15 kilometers (9 mi) southwest of the town of Uzda – about 55 km (34 mi) southwest of capital city Minsk. Only 17 kilometres (11 mi), an eastward meander, contributes to the Belarus–Lithuania border. Thereafter the river includes notable loops along a minor tectonic fault.

Grodno, or Hrodna, is a city in western Belarus. It is one of the oldest cities in Belarus. The city is located on the Neman River, 300 kilometres (190 mi) from Minsk, about 15 kilometres (9.3 mi) from the border with Poland, and 30 kilometres (19 mi) from the border with Lithuania. Grodno serves as the administrative center of Grodno Region and Grodno District, though it is administratively separated from the district. As of 2025, the city has a population of 363,718.

The modern city of Grodno, founded in 1127, originated as a small fortress and trading outpost, on the extreme northern end of the deeply penetrated Slavic peninsula into the lands of the Baltic tribal union of the Yotvingians. It was also a home to the Dregoviches Slavic tribe. It was a significant city in Black Ruthenia and later part of the Grand Duchy of Lithuania, which joined the Polish-Lithuanian Union in 1385. Grodno faced numerous invasions, most notably by the Teutonic Knights. The city was an important trade, commerce, and cultural center in the Polish-Lithuanian Commonwealth, and one of its royal residences. The Kings of Poland and Grand Dukes of Lithuania allowed the creation of a Jewish commune in 1389, and the city received its charter in 1441. Grodno was the site of two battles during the Great Northern War.