Zion Wilderness, Protected wilderness area in Washington County, Utah, United States.

Zion Wilderness is a protected nature reserve in Washington County featuring rugged mountain ridges, deep canyons, and layers of different plant communities depending on elevation. The landscape changes from steep rocky slopes to open plateaus shaped by natural erosion over vast timescales.

The area gained federal protection in 2009 when Congress designated it as a wilderness reserve under the Wilderness Act. This designation followed decades of efforts to safeguard the region's natural and ecological value.

The canyon road ends at the Temple of Sinawava, named for the coyote god of the Paiute, and the Parrusits and other Southern Paiute subtribes replaced earlier groups by 1300. Mormons arrived in 1858 and settled in the early 1860s; the name Zion comes from their vocabulary, chosen in 1918 over the Paiute-derived Mukuntuweap.

Several trailheads are accessible via local roads, and campsites can be found nearby along with lodging options in surrounding towns. Overnight stays in the wilderness require permits that should be obtained in advance.

Rock layers throughout the area reveal a long geological story including traces of ancient lake beds and petrified sand dunes dating back 150 million years. Hikers can observe the visible shifts in these geological layers as they change elevation along different trails.