Blue Gap (Navajo: Tachíí/Bis Dootłʼizh Ndeeshgiizh) is an unincorporated community in Apache County, Arizona, United States.

[1] Blue Gap is on the Navajo Nation 22 miles (35 km) west of Chinle.

The community is in Polacca Wash near State Road 291 in western Apache County.

[2] Blue Gap has a post office with ZIP code 86520.

[3]