State Route 3 (SR 3) is a 351-mile-long (565 km) state highway that travels south-to-north through portions of the western part of the U.S. state of Georgia, roughly paralleling Interstate 75 (I-75). The highway travels from its southern terminus at the Florida state line, where SR 3 and SR 300 both reach their southern terminus, concurrent with US 19. Here, US 19 travels concurrent with State Road 57, 12 miles (19 km) south-southeast of Thomasville. SR 3 travels through portions of Thomas, Mitchell, Dougherty, Lee, Sumter, Schley, Taylor, Upson, Pike, Spalding, Henry, Clayton, Fulton, Cobb, Bartow, Gordon, Whitfield, and Catoosa counties to its northern terminus at the Tennessee state line, in East Ridge, where US 41/US 76 continue, concurrent with State Route 8. It travels through Thomasville, Albany, Griffin, Atlanta, Calhoun, and Dalton.

Interstate 75 (I-75) in the US state of Georgia travels north–south along the U.S. Route 41 (US 41) corridor in the central part of the state, traveling through the cities of Valdosta, Macon, and Atlanta. It is also designated—but not signed—as State Route 401 (SR 401).