Wilson Arch, Natural arch in San Juan County, United States.

Wilson Arch is a free-standing Entrada Sandstone arch beside U.S. Route 191, 24 miles (39 km) south of Moab in San Juan County. It spans 91 feet (28 m) and rises 46 feet (14 m) above its ledge at 6,175 feet (1,882 m) elevation. The opening sits in a fin whose middle wore away while harder cementing material held; the collapsed fin to its right shows the alternative outcome.

The arch takes its name from Joe Wilson, an early settler who built a cabin in the nearby Dry Valley region. His connection to the area became part of how locals referred to this natural feature.

The name comes from Joe Wilson, a pioneer whose cabin stood in nearby Dry Valley; the interpretive sign at the pullout tells this story. The arch is cut from Entrada Sandstone, and the same sign explains how ice, meltwater and wind opened the fins around it. A collapsed fin stands just to its right.

The formation sits directly along U.S. Route 191 with designated parking spots very close by. Signage along the roadside helps visitors understand what they are looking at without requiring special equipment or long hikes.

The fin immediately to the right of Wilson Arch is a collapsed one: its cementing material gave way and the middle fell out, while Wilson Arch kept its span because its rock was harder. The arch stands at 6,175 feet (1,882 m) and is visible from U.S. Route 191, where turnouts on the east side have interpretive signs.