The Gap is an unincorporated community on the Navajo Nation in Coconino County, Arizona, United States.

[1] While the community includes not much more than a trading post, a gas station, a school, and a tribal administrative building, in an addition to few homes, it is important as the only place were services are offered along the 80-mile (130 km) stretch of US 89 between Cameron and Page.

However, it became more significant in February 2013 when a geological event caused a 150-foot (46 m) stretch of US 89 to buckle.

The loss of this stretch of road forced detours for traffic entering the Page area from the south.

Since the southern end of N20 is within the community, once N20 was paved several months later and also designated as U.S. Route 89T (US 89T), for the next two years most traffic along US 89 north of The Gap was diverted to US 89T.