Muntenia (Romanian pronunciation: [munˈteni.a], also known in English as Greater Wallachia) is a historical region of Romania, part of Wallachia (also, sometimes considered Wallachia proper, as Muntenia, Țara Românească, and the rarely used Valahia are synonyms in Romanian). It is situated between the Danube (south and east), the Carpathian Mountains (the Transylvanian Alps branch) and Moldavia (both north), and the Olt River to the west. The latter river is the border between Muntenia and Oltenia (or Lesser Wallachia). Part of the traditional border between Wallachia/Muntenia and Moldavia was formed by the rivers Milcov and Siret.

Muntenia includes București - Ilfov, Sud - Muntenia, and part of the Sud-Est development regions. It consists of nine counties entirely:

And parts of four others:

Romania's capital city, Bucharest, is situated in Muntenia. Other important cities are: