Oreorchis patens is a species of orchid native to eastern Asia. It is known from Japan, Korea, Russian Far East (Kamchatka, Primorye, Sakhalin, Kuril Islands), China (Gansu, Guizhou, Heilongjiang, Henan, Hunan, Jiangxi, Jilin, Liaoning, Sichuan, Taiwan, Yunnan). Oreorchis patens has two recognized subspecies: \n* Oreorchis patens subsp. coreana (Finet) Y.N.Lee - Jeju-do Island in Korea \n* Oreorchis patens subsp. patens - remainder of species range