Arctic char or Arctic charr (Salvelinus alpinus) is both a freshwater and saltwater fish in the Salmonidae family, native to Arctic, sub-Arctic and alpine lakes and coastal waters. No other freshwater fish is found as far north.

The Arctic char is closely related to both salmon and trout and has many characteristics of both. Individual char fish can weigh 20 lb (9 kilograms) or more with record sized fish having been taken by angling in Northern Canada, where it is known as iqaluk or tariungmiutaq in Inuktitut. Generally, whole market sized fish are between 2 and 5 lb in weight (900 g and 2.3 kilograms). The flesh colour of char varies; it can range from a bright red to a pale pink.