Tennessee State Route 12

State Route 12
State Route 12
	SR 12; primary in red, unsigned in blue
Route information
	Maintained by TDOT
Length	62.46 mi (100.52 km)
Existed	October 1, 1923–present
Major junctions
South end	US 31 / US 41 / US 431 / US 41A in Nashville
	I-65 in Nashville; SR 155 (Briley Parkway) in Nashville; SR 455 in Ashland City; SR 49 / SR 249 in Ashland City; SR 48 in Clarksville; ; US 41A Byp. / US 41A / US 79 in Clarksville; SR 374 in Clarksville;
North end	; US 41 Alt. at the Kentucky State Line
Location
Country	United States
State	Tennessee
Counties	Davidson, Cheatham, Montgomery
Highway system
	Tennessee State Routes; Interstate; US; State;

State Route 12 (SR 12) is a highway from Davidson County, Tennessee to Montgomery County, Tennessee.

^ Highway Planning Survey Division (1925). Biennial Report of the Commissioner of the Department of Highways and Public Works State of Tennessee for the Years 1923 and 1924 (PDF) (Report). Nashville: Tennessee Department of Highways and Public Works. pp. 39–44. Retrieved May 19, 2023.