town, northern Bulgaria. It lies along the Danube River near its confluence with the Osŭm (Ossăm) and opposite Turnu Măgurele, Rom.

Nikopol was an important Danubian stronghold—ruined fortresses still dominate the town—founded by the Byzantine emperor Heraclius I in AD 629. In 1396 the Ottoman sultan Bayezid I defeated a Crusader army led by King Sigismund of Hungary at Nikopol, an event that contributed significantly to Turkish domination of the Balkans for five centuries. Occupied by the Turks in 1393–1877, Nikopol was again fortified and became an important administrative town. Its population grew to approximately 40,000 before it was destroyed by the Russians in 1810; thereupon the Turks moved the regional centre of government northwest to Vidin, and Nikopol consequently declined. The Russians liberated Nikopol from Turkish control in 1877. Farming, viticulture, and fishing are the main means of livelihood; as a port, it has been superseded by Somovit. Pop. (2001) 13,656.

city, south-central Ukraine. It lies along the northern shore of the Kakhovka Reservoir on the Dnieper River and on the Zaporizhzhya–Kryvyy Rih railway. Founded as Nikitin Rog (Ukrainian: Mykytyn Rih) in the 1630s at a strategic crossing of the river, it was renamed Nikopol in 1782. It has been historically important as the centre of a large deposit of manganese, first mined there in 1886. Much of the extensive reserves has a high metal content. The city's metallurgical industry has produced ferroalloys, steel tubes, cranes, and agricultural machinery; food processing and brewing also have been significant. A dam protects the lower part of the city from inundation by the reservoir. Pop. (2001) 136,280; (2005 est.) 131,774.