Aoraki / Mount Cook is the highest mountain in New Zealand, with a height of 3,724 metres above sea level. It is situated within the Southern Alps, a major mountain range extending along much of the length of the South Island. The mountain lies in the heart of Aoraki / Mount Cook National Park, which was formally established in 1953 and is part of the Te Wāhipounamu – South West New Zealand World Heritage Area.

The mountain holds profound cultural and spiritual significance for the Ngāi Tahu iwi, the principal Māori tribe of the region. In Māori tradition, Aoraki is the eldest son of Rakinui, the Sky Father, and his brothers are other prominent peaks of the Southern Alps. The name Aoraki is often translated as "Cloud Piercer." The dual name, Aoraki / Mount Cook, officially recognizes both the Māori and European heritage, with the European name commemorating Captain James Cook.

The peak is a major destination for mountaineering and alpine tourism. Its challenging terrain, including the formidable Caroline Face, attracts experienced climbers from around the world. The first successful ascent to the summit was achieved in 1894 by New Zealanders Tom Fyfe, George Graham, and Jack Clarke. The mountain is also closely associated with Sir Edmund Hillary, who undertook many training climbs on its slopes before his historic ascent of Mount Everest in 1953.

The surrounding national park encompasses over 700 square kilometres of rugged alpine terrain. This environment includes large glaciers, such as the Tasman Glacier, which is the longest glacier in New Zealand. The park's extreme topography results from intense glacial and tectonic activity, with the mountain itself continuing to undergo geological processes that can alter its height over time.

The region experiences a harsh and dynamic alpine climate, characterized by sudden weather changes and significant precipitation. This climate supports unique flora and fauna adapted to the high-altitude conditions. The area is a habitat for species like the kea, the world's only alpine parrot, and supports specialized alpine vegetation.

As a cornerstone of New Zealand's natural heritage, Aoraki / Mount Cook and its national park are managed for conservation, scientific study, and public recreation. The park provides opportunities for scenic flights, guided walks, and stargazing, owing to its designation as an International Dark Sky Reserve. Its landscapes have been featured extensively in film and media, contributing to its iconic status both nationally and internationally.