Cozieni is a commune located in Buzău County within the Muntenia region of Romania. It serves as an administrative center for a collection of rural settlements.
The commune is composed of twenty distinct villages: Anini, Bălănești, Bercești, Ciocănești, Cocârleni, Colțeni, Cozieni, Fața lui Nan, Gloduri, Izvoru, Lungești, Nistorești, Pietraru, Punga, Teiș, Trestia, Tulburea, Valea Banului, Valea Roatei, and Zăpodia.