Lake Arin (in Turkish: Arin Gölü; also Sodalı Göl Armenian: Արին լիճը, Kurdish: Gola Arîn) is a soda lake in Adilcevaz district of Bitlis, Turkey. The lake is to the east of Adilcevaz and separated from Lake Van, the biggest lake of Turkey by alluvial deposits ^[1] of only 1 kilometre (0.62 mi) width.

The mid point of the lake is  at 38°48′35″N 42°59′20″E / 38.80972°N 42.98889°E / 38.80972; 42.98889.^[2] The area of the lake is about 13 square kilometres (5.0 sq mi).^[1] Gadwall, red-crested pochard and ruddy duck are among the birds of the lake.^[3]