Kogin Irrawaddy kogi ne da ke kudu maso gabashin Asiya wanda ya ratsa ta Myanmar (wanda a da ake kira Burma). Shine kogi mafi girma a Myanmar, tare da jimlar tsawon kusan kilomita 2,170 (mil 1,348) da magudanar ruwa wanda ya kai kusan murabba'in kilomita 413,000 (kilomita 159,600). An yi imanin cewa sunan "Irrawaddy" ya samo asali ne daga kalmar Sanskrit "Airāvatī", wanda ke nufin "kogin giwa". Kogin wata muhimmiyar hanyar sufuri ce ga Myanmar kuma tana tallafawa nau'ikan flora da fauna iri-iri.