Devon Island (Inuit: Tatlurutit) wani tsibiri ne a Kanada kuma mafi girma tsibirin da ba a zaune a duniya ba. Tana cikin Baffin Bay, Qikiqtaaluk Region, Nunavut, Kanada. Yana daya daga cikin manyan mambobi na Kanada Arctic Archipelago, na biyu mafi girma na Sarauniya Elizabeth Islands, tsibirin na shida mafi girma a Kanada, kuma tsibiri na 27 mafi girma a duniya. Ya ƙunshi 55,247 km2 (21,331 sq mi) (dan kadan fiye da Croatia) na Precambrian gneiss da Paleoic siltstones da shales. Matsayi mafi girma shi ne Devon Ice Cap a 1,920 m (6,300 ft) wanda yake wani ɓangare na Arctic Cordillera.
Tsibiri na 27 mafi girma a duniya