Bow Glacier, Glacier in Banff National Park, Alberta, Canada.

Bow Glacier is an outflow glacier of the Wapta Icefield on the Continental Divide, about 37 km northwest of Lake Louise in Banff National Park. Its upper snowfield feeds a crevassed blue-grey tongue that ends above Bow Lake, and a narrow waterfall drops from its lower margin into the lake.

Bow Glacier carved the Bow Valley before retreating at the end of the Last Glacial Maximum. Since the Little Ice Age ended in 1850, it has retreated steadily, losing about 1,100 metres by 1953. Further retreat has left a new lake at the terminal moraine at its snout.

The glacier feeds Bow Lake and the Bow River, whose name comes from the bow reeds the Stoney people gathered at the river's mouth. The Icefields Parkway viewpoint is a stop for travellers crossing the Continental Divide.

Bow Glacier lies about 37 km northwest of Lake Louise and is seen from the Icefields Parkway; the glacier itself is not climbed or walked on. The ice sits high in a mountain gap above Bow Lake, so the view is from the road and roadside pull-offs. Snow can close the parkway outside summer.

The glacier's retreat since 1850 has exposed a terminal moraine at its snout, where meltwater has pooled into a small new lake. Erosion of soil once shielded by the ice has built a sediment delta at the western end of Bow Lake, visible as brown shallows against the turquoise water.