Dârmănești is a commune in Argeș County, in the Muntenia region of Romania. It is composed of five villages: Dârmănești, Negreni, Piscani, Valea Nandrii, and Valea Rizii.
The commune is situated in the historical region of Muntenia, which covers southern Romania. Its administrative structure is typical of rural Romanian communes, in which a single communal administration serves several component villages.