State Route 89 (SR 89) is a 104.53-mile (168.22 km) state highway in the U.S. state of Arizona.

The southern terminus of SR 89 is located at a junction with U.S. Route 93 northwest of Wickenburg. It is a largely north–south route; the largest city through which it now passes is Prescott, Arizona, where it meets State Route 69 and the extremely scenic State Route 89A. The segment between Prescott and Congress, Arizona (junction State Route 71) is quite scenic. The northern terminus of the highway is located at an interchange with I-40 in Ash Fork.

This highway was once a segment of U.S. Route 89 between Ash Fork at I-40 and US 93 northwest of Wickenburg, Arizona.

All of US 89 was deleted south of its current southern terminus with Interstate 40 in Flagstaff, Arizona after Interstates offered shorter and more direct routes than the old long-distance US 89 in central and southern Arizona.

The entire route is in Yavapai County.