Devon Island (Inuit: Tatlurutit) bụ agwaetiti dị na Canada na agwaetiti kachasị ukwuu na-enweghị ebe obibi na Earth. Ọ dị na Baffin Bay, Qikiqtaaluk Region, Nunavut, Canada. Ọ bụ otu n'ime ndị isi nke Canadian Arctic Archipelago, nke abụọ kachasị ukwuu nke Queen Elizabeth Islands, agwaetiti nke isii kachasị ukwuu na Canada, na agwaetiti nke 27 kachasị ukwuu n'ụwa. Ọ gụnyere 55,247 km2 (21,331 sq mi) (nke dị ntakịrị karịa Croatia) nke Precambrian gneiss na Paleoic siltones na shales. Ebe kachasị elu bụ Devon Ice Cap na 1,920 m (6,300 ft) nke bụ akụkụ nke Arctic Cordillera. Devon Island nwere ọtụtụ obere ugwu ugwu, dị ka Treuter Mountains, Haddington Mountains na Cunningham Mountains?
Ọ bụ agwaetiti nke iri abụọ na asaa kacha ibu n'ụwa