Fremont Island seen from the north shore of Antelope Island. Fremont Island, at , is the third largest island within the Great Salt Lake in Utah, USA. Antelope Island, at in area, is the largest island within the Great Salt Lake.
There are certain flora species that occur on Fremont Island, and there is historic evidence that some species that were earlier documented to occur on the island are no longer present. For example, historically in evidence on Fremont Island, was the Yellow Mariposa Lily, Calochortus luteus, which species was documented to have occurred on Fremont Island in the nineteenth century.
At least one permanent family has lived on Fremont Island. Kate and Uriah Wenner and their children lived on the island for several years prior to the death of Uriah in 1891.
Fremont Island is privately owned and permission is required for access. The island has two landing strips suitable for landing small planes on the island.