Kentucky Route 1973 (KY 1973) is a 33.886-mile-long (54.534 km) north–south secondary state highway located in Fayette and Scott counties in east-central Kentucky.

It traverses the eastern and northern suburbs of Lexington and southern Scott County.

KY 1973 begins at a junction with the concurrently running U.S. Route 25 (US 25) and US 421 near its interchange with Interstate 75 (I-75) in southeastern Fayette County.

It then goes over I-64 via an overpass without access to the Interstate, then crosses KY 57 and then a brief concurrent run with US 27 and US 68.

[2] After US 25, the route enters Scott County, and continues northwest until its end at White Sulphur and US 460.