State Route 23 (abbreviated SR 23) is an east–west major arterial urban highway running from Bellevue Boulevard (U.S. Route 51) near downtown Memphis to Interstate 240 near Shelby Farms in Shelby County, Tennessee.

This highway is designated on maps as being a secondary state route from its eastern terminus to its junction with SR 277 (East Parkway).

Union Avenue continues beyond this terminus going toward downtown Memphis ending at Riverside Drive.

According to data from TDOT, The SR 23 designation ends at I-240, however, Walnut Grove Road actually continues east through Shelby Farms.

The project, which included a new Single Point Urban Interchange with Humphreys Boulevard, was scheduled to be complete before December 1, 2008, but was finished eight months early.