Park Valley is an unincorporated community in north-central Box Elder County, Utah, United States.

Utah State Route 30 runs through the center of the valley, generally from east to west.

What is called the community of Park Valley includes name locations that used to be nearly separate communities, such as Rosette, Dove Creek, Muddy, Rosebud, and Kelton, as well as ones that have been almost forgotten by time, such as Ten-Mile, Clear Creek, Rosen Valley, Terrace, Golden, Matlin, and other lesser camps along the old railroad grade.

While the Transcontinental Railroad coming to Utah did not pass directly through the valley, its proximity played an important part in the settlement and development of the area.

The first permanent settler was William P. (Cotton) Thomas, who migrated from Brigham City in 1869, and developed a cattle ranch near Dove Creek.