Utah State Route 126 (1933-1969), a former state highway in Beaver County connecting Greenville with SR-21 (north of Greenville)
Utah State Route 126 (May–August 1977), a temporary renumbering of Utah State Route 82 in Box Elder County connecting Tremonton with SR-13 (east of Garland)
Utah State Route 126, the current state highway in Davis, Weber, and Box Elder counties connecting Layton with South Willard