比尔什托纳斯是立陶宛的城镇，位于首府陶拉格以南39公里的尼曼河右岸，由陶拉格县负责管辖，海拔高度79米，面积13平方公里，2010年人口3,136。

Birštonas ( pronunciation ) is a balneological resort and a spa town in Lithuania situated 30 km (19 mi) south of Kaunas on the right bank of the Nemunas River. Birštonas received its city rights 1529, and was appointed a city in 1966. The city is the administrative centre of the Birštonas municipality.