Prienai is a city in Lithuania situated on the Nemunas River, 29 km south of Kaunas. In 2023 the city had 8,894 inhabitants. The name of the ci…Prienai is a city in Lithuania situated on the Nemunas River, 29 km south of Kaunas. In 2023 the city had 8,894 inhabitants. The name of the city is a derivative from a surname Prienas. Pociūnai Airport is associated with the city.