Kobresia sibirica, the Siberian bog sedge, is a plant species known from arctic and alpine tundra in Siberia, the Russian Far East, Alaska, Yukon, the Canadian Northwest Territories, Nunavut, British Columbia, Colorado (several counties in the Rockies), Utah (Duchesne County), Montana (Carbon County), and Wyoming (Park County). Some authorities have considered the North American collections as distinct species (K. macrocarpa, described from Colorado, and K. hyperborea from the Canadian Arctic), but they are more often tentatively regarded as conspecific with K. siberica pending further investigation.