Colonești is a commune in Olt County, in the Muntenia region of Romania. It is composed of nine villages: Bărăști, Bătăreni, Cârstani, Chelbești, Colonești, Guești, Mărunței, Năvârgeni, and Vlaici.
The commune is administered from the village of Colonești, which shares its name. Olt County lies in southern Romania, within the historical region of Muntenia, also known as Wallachia.
As a commune, Colonești is one of the basic units of local administration in Romania, comprising its nine constituent villages under a single communal government.