The Mueller Glacier[1] is a 13-kilometre (8.1 mi) long glacier flowing through Aoraki / Mount Cook National Park in the South Island of New Zealand.

It lies to the west of Mount Cook Village within the Southern Alps, flowing roughly north-west from its névé near Mount Montgomerie before curving around the Sealy Range as it approaches its terminus.

The glacier was named after German-Australian botanist and explorer Baron Ferdinand von Mueller.

[2] Based on dating of a yellow-green lichen of the Rhizocarpon subgenus, Mueller Glacier is considered to have had a Little Ice Age maximum mass between 1725 and 1730.

[3] White Horse Hill, a small hill to the north of Mount Cook Village, represents the moraine left from this period.