弟子屈町位于北海道钏路综合振兴局北部。町名是来自阿伊努语「teska-ka」，意思为岩盘的上面。

位于钏路市北约80公里位置。

虽然隶属钏路综合振兴局，但地形上接近鄂霍次克综合振兴局。 冬季温度降低快速，在川汤温泉甚至可看到水分冻结于空气中「Diamond dust」的现象。

Teshikaga(弟子屈町,Teshikaga-chō) is a town located in Kawakami District, Kushiro Subprefecture, Hokkaido, Japan. As of December 31, 2007 it has an estimated population of 8,690 and an area of 774.53 km².

Famous tourist attractions in the town include Lake Mashu (Ainu: Kamuy-to), Lake Kussharo (Ainu: Kuccharo) and Kawayu Onsen.