Mueller Glacier, Alpine glacier in Aoraki Mount Cook National Park, New Zealand

Mueller Glacier is a glacier in the Southern Alps that extends about 13 kilometers through the mountain landscape. It flows from Mount Montgomerie in a northwesterly direction and curves around the Sealy Range until it reaches its terminus.

The glacier was named after Baron Ferdinand von Mueller, a German-Australian botanist who studied the Alpine plant life of the region in the 19th century. This naming honors his contributions to the scientific exploration of New Zealand's southern mountain regions.

The glacier and the Mueller Hut on the Sealy Range ridge east of it are both named after Ferdinand von Mueller, the German-Australian botanist and explorer. The hut is a stop for climbers heading into the surrounding peaks.

The Mueller Glacier is reached from Mount Cook Village via State Highway 80, with several walking trails starting near the village. The Hooker Valley Track leads to the Hooker Glacier and its terminal lake, not to the Mueller Glacier; the Mueller Hut on the Sealy Range ridge east of the glacier is reached by a separate alpine route.

At the glacier's terminus, a mountain lake forms from meltwater that feeds into the Hooker River below. Neighboring ice masses like Frind and Huddleston also contribute to this water system.