State Route 392 (SR 392) is a state highway and bypass around downtown Crossville in Cumberland County in the U.S. state of Tennessee.

SR 392 begins on the northwestern edge of downtown Crossville at an intersection with US 127/SR 28 (N Main Street). It proceeds southwest as an undivided 2-lane highway with a center turn lane to an intersection with US 70/SR 1 (West Avenue), where it widens to a 4-lane undivided highway and turns southeast. The highway passes by several homes and businesses before narrowing to 2 lanes after its short concurrency with SR 101 (Lantana Road). SR 392 continues southeast through some neighborhoods to another intersection with US 127/SR 28 (S Main Street). The highway then gains a center turn lane and curves northeast, passing through some more rural areas before coming to an end at an intersection with US 70/SR 1/SR 101 (Highway 70/Peavine Road) at a roundabout, just south of SR 101's interchange with I-40 (Exit 322).

The entire route of SR 392 is known as Miller Avenue.

The entire route is in Crossville, Cumberland County.

mi	km	Destinations	Notes
0.00	0.00	US 127 (North Main Street/SR 28) – Jamestown, Pikeville	Southern terminus
0.04	0.064	US 70 (West Avenue/SR 1) to US 70N – Sparta, Monterey
1.6	2.6	SR 101 north (Lantana Road) – Fairfield Glade	Southern end of wrong-way SR 101 concurrency
1.7	2.7	SR 101 south (Lantana Road) – Lake Tansi Village	Northern end of wrong-way SR 101 concurrency
2.8	4.5	US 127 (South Main Street/SR 28) – Pikeville, Crossville
5.3	8.5	US 70 (Highway 70/SR 1) / SR 101 (Peavine Road) to I-40 – Fairfield Glade, Crab Orchard, Crossville	SR 101 goes to I-40; Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus