Gitlax̱t'aamiks (/ɡɪtˈlɑːdəmɪks/), formerly New Aiyansh (/aɪˈænʃ/), is a Nisga'a village about 100 km (62 mi) north of Terrace, in the heart of the Nass River valley, Canada.

The area is home to 806 people and the Nisga'a Memorial Lava Bed Provincial Park.

In front of the Nisga'a Elementary Secondary School stands the Unity Totem Pole which, raised in 1977, was the first totem pole raised in the Nass Valley since the late 19th century.

The original Aiyansh was partly destroyed by flood in November 1917 and the community moved to Gitlax̱t'aamiks.

A later flood in this community led to relocation to the higher site which became New Aiyansh in the late 1960s.