State Route 823 is a state highway in Yakima County in the U.S. state of Washington. It runs for 5 miles (8.0 km) from a junction with Interstate 82, through the streets of Selah northward to a junction with State Route 821, which is also known as Canyon Road and Firing Center Road. Although not signed as such, SR 823 effectively functions as a Business-82 loop through Selah.