Willow Canyon is a census-designated place in Pima County, in the U.S. state of Arizona. The population was "S" (Seasonal) at the 2010 census.
The community is an area of USFS Recreation Residences within the Coronado National Forest, north of Tucson on the Catalina Highway. According to the U.S. Census Bureau, the community has an area of , all land.
It is not in any school district. The Pima County School Superintendent arranges for education of K-12 students living in areas without school districts.