Prienai (Lithuanian pronunciation: [prʲɪ̂ɛ.nɐɪ̯ˑ]) is a city in Lithuania situated on the Nemunas River, 29 km (18 mi) south of Kaunas. In 2011 the city had 9,867 inhabitants. The name of the city is a derivative from a surname Prienas. Pociūnai Airport is associated with the city.