Mount Sefton (Māori: Maukatua) is a mountain in the Aroarokaehe Range[2] of the Southern Alps of New Zealand, just 12 kilometres (7.5 mi) south of Aoraki / Mount Cook.

To the south lies Mount Brunner, and to the north The Footstool, both more than 400 metres (1,300 ft) shorter.

[1] The mountain is prominently visible from Mount Cook Village in the Hooker Valley, with Tuckett Glacier flowing down the south-eastern side of the mountain and Mueller Glacier in the valley below it.

[3] An early resident, Charles French Pemberton, named the area, whilst the geologist Julius von Haast named the mountain after William Sefton Moorhouse, the second Superintendent of Canterbury Province.

[4] Edward FitzGerald, with Matthias Zurbriggen as his guide, completed the first recorded climb to the summit shortly after Christmas 1894.