Sallirmiutun (formerly Siglitun)[1] is the dialect of Inuvialuktun spoken by the Siglit, an Inuit group of the Northwest Territories, Canada.

It is mainly used in the Inuvialuit communities of Paulatuk, Sachs Harbour and Tuktoyaktuk.

[2] Sallirmiutun was once the principal dialect of the Mackenzie River delta, nearby parts of the coast and Arctic Ocean islands, but the number of speakers fell dramatically following outbreaks of new diseases in the 19th century and for many years Sallirmiutun was believed to be completely extinct.

Sallirmiutun means "the language of the people of the coast" referring to the Beaufort Sea.

It is one of the three dialects, along with Kangiryuarmiutun and Uummarmiutun, of Inuit language grouped together under the label Inuvialuktun.