An inuksuk or inukshuk is a type of stone landmark or cairn built by, and for the use of, Inuit, Iñupiat, Kalaallit, Yupik, and other peoples of the Arctic region of North America. These structures are found in northern Canada, Greenland, and Alaska. This combined region, north of the Arctic Circle, is dominated by the tundra biome and has areas with few natural landmarks.

A cairn is a human-made pile of stones raised for a purpose, usually as a marker or as a burial mound. The word cairn comes from the Scottish Gaelic: càrn.