Oltenița (Romanian pronunciation: [olˈtenitsa] ⓘ) is a city in Călărași County, Muntenia, Romania, on the left bank of the river Argeș, where its waters flow into the Danube.

The national road DN4 connects Oltenița to Bucharest, 64 km (40 mi) to the northwest.

Excavations on Gumelnița hill near the city revealed a Neolithic settlement dating from the 4th millennium BC.

[4] During the Russo-Turkish War, 1877–1878, Oltenița was an important crossing point into Bulgaria for Romanian troops called to aid the Russian Army during the siege of the Pleven (Plevna) stronghold.

Stadionul Municipal is the home ground of the football club CSM Oltenița and holds 2,500 people.