Cotnari (Romanian pronunciation: [kotˈnarʲ]) is a village and the center of the eponymous commune in Iași County, Romania, in the historical region of Western Moldavia.

It is located north-west of Iași and south of Hârlău, in a major wine-producing region of Romania, and is famous for the wine variety known as Grasă de Cotnari.

The commune is composed of eleven villages: Bahluiu, Cârjoaia, Cireșeni, Cotnari, Făgăt, Hodora, Horodiștea, Iosupeni, Lupăria, Valea Racului, and Zbereni.

Proof of habitation in the area goes back to the Cucuteni culture; a fortress dating from the 6th or 5th century BC was discovered on the nearby Cătălina Hill (nowadays a nature reserve).

The establishment of vineyards is attributed by local tradition to an initiative of Moldavian Prince Stephen the Great, under whose rule the village rose to the status of alternate residence, while stone structures and roads to serve the wine trade were built in the area.