Islet in the Sky is a sandstone pillar located within Canyonlands National Park, in San Juan County, Utah, United States.

This spire is composed of Wingate Sandstone, which is the remains of wind-borne sand dunes deposited approximately 200 million years ago in the Late Triassic.

Precipitation runoff from Islet in the Sky drains east to the nearby Colorado River via Buck Canyon.

The first ascent of the summit was made by Ken Trout and Bruce Lella on November 22, 1979, via the north side.

[5] This desert climate receives less than 10 inches (250 millimeters) of annual rainfall, and snowfall is generally light during the winter.