State Route 747 (SR 747) is a north–south state highway in the southwestern portion of the U.S. state of Ohio. It connects with SR 4 at both ends, from a signalized intersection in Glendale at the south end to a signalized intersection approximately 2 miles (3.2 km) west of SR 63 near Monroe at the north end, bypassing Fairfield and Hamilton in the process. SR 747 is also known as Princeton-Glendale Road.
When it was designated in 1937, SR 747 followed the same routing between SR 4 in Glendale and SR 4 near Monroe that it utilizes to this day. The highway has not experienced any major changes to its routing since it was established.