State Route 72 (SR 72) is a 36.74-mile-long (59.13 km) state highway in the U.S. state of Arizona. It runs from SR 95 near Parker southeast to U.S. Route 60 (US 60) in Hope. Along its route in La Paz County, the highway is mostly parallel to the Arizona and California Railroad and runs through the community of Bouse in desert terrain. The route was established in 1930 from its current eastern terminus all the way to the California state line, but was truncated in 1965. The route was completely paved by 1940.