Qiviuq [sg] or qiviut [pl] (/ ˈ k ɪ v i ə t / KIV-ee-ət; Inuktitut syllabics: ᕿᕕᐅᖅ; Inuinnaqtun: qiviuq; [1] Inupiaq: qiviu or qiviuq [2] (sometimes spelled qiveut)) is the inner wool of the muskox.

Qiviut (pronounced "kiv-ee-ute"), the downy-soft underwool from the Arctic musk ox, is shed naturally each year during the spring months. Eight times warmer than wool and extraordinarily lightweight, Qiviut is one of the finest natural fibers known to man.

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Inuit-owned fibre mill making qiviut (muskox fibre) yarn, knitwear, and Nuna Heat reusable hand warmers--as well as Indigenous-made jewelry, mitts, outerwear, and décor. Made in Canada!

Qiviut (kiv'-ee-ute) is the soft down under-wool produced by musk oxen. Qiviut is one of the unique adaptations of musk oxen which makes it possible to survive the freezing arctic winters. Musk oxen do not migrate like caribou but they will range over a great swath of territory.

The Musk Ox Farm is a nonprofit organization dedicated to gentle musk ox husbandry, production of qiviut, and education to the public.

The qiviut called the musk ox wool has a brownish-grey color. It also has a luxurious luster that closely resembles the cashmere but it is softer with a higher warmth to weight ratio. The qiviut has about 12-14 microns and an average staple length of 3.5-7 cm.