State Route 477 (SR 477), also known as Cummins Mill Road, is a 5.4-mile-long (8.7 km) state highway in Jackson County, Tennessee.

It connects SR 290 in Bloomington Springs with SR 135 near Dodson Branch, and it provides access to Cummins Falls State Park.

About half-way between its termini, it passes Cummins Falls State Park.

SR 477 crosses over the Blackburn Fork River and proceeds in a northeasterly direction until it meets its eastern terminus at an intersection with SR 135.

The entire route is in Jackson County.