The Little Iskut Formation is a stratigraphic unit of Miocene age in northwestern British Columbia, Canada.

[1][2] It occurs at the northeastern end of the Spectrum Range where it covers a roughly 10-kilometre-wide (6.2-mile) area.

A small portion of the Little Iskut Formation is exposed in the Mess Creek Escarpment to the west.

The Little Iskut Formation originally formed a small symmetrical shield volcano during the Miocene.

[1] K–Ar dating has yielded an age of 7.2 ± 0.3 million years for Little Iskut trachybasalt.