Illecillewaet River
 The Illecillewaet River /ɪləˈsɪləwət/ is a tributary of the Columbia River located in British Columbia Canada. Fed by the Illecillewaet Glacier in Glacier National Park the river flows approximately 62 kilometres (39 mi) to the southwestwhere it flows into the north end of Upper Arrow Lake at Revelstoke. The river's drainage basin is 1202 square kilometres (464 sq mi).