Ohio State Route 111

State Route 111
Route information
Maintained by ODOT
Length	31.49 mi[1] (50.68 km)
Existed	1923[2][3]–present
Major junctions
West end	Woodburn Road near Edgerton, IN
Major intersections	US 127 in Paulding
East end	SR 15 / SR 18 / SR 66 in Defiance
Location
Country	United States
State	Ohio
Counties	Paulding, Defiance
Highway system
Ohio State Highway System Interstate US State Scenic
← SR 110 → SR 112

State Route 111 (SR 111) is a 31.49-mile (50.68 km) state route that runs between the Indiana state line and Defiance in the US state of Ohio. Most of the route is a rural two-lane highway and passes through both farmland and residential properties. For some of its path, SR 111 runs generally parallel to the north of the Auglaize River.

The highway was first signed in 1923 on much the same alignment as today. A few realignments of the route have happened; the first in 1927 removed a section of highway west of SR 49. This section was later extended due west of SR 49 to the Indiana state line. Another realignment happened in 1983 with the route heading north out of Paulding concurrent with U.S. Route 127 (US 127).