Kentucky Route 393 (KY 393) is a state highway in Oldham County, Kentucky, United States. Its northern terminus is US 42. From there it continues 5.5 mi south to a 0.04 mi overlap with KY 146 in Buckner. It then splits south to continue for 2.5 mi where it junctions KY 22 near Centerfield. It follows KY 22 east for 1 mi until it splits to the south. It continues 1.5 mi south and then terminates at Mount Zion Road. There are no low clearances or weight limits on this particular state route