State Route 229 (SR 229) is an east-west state highway in the central part of the U.S. state of Ohio. The western terminus of State Route 229 is at a T-intersection with State Route 47 just 0.25 miles (0.40 km) south of the village limits of Waldo. Its eastern terminus is more than 50 miles (80 km) to the east at a T-intersection with U.S. Route 36 about 5.5 miles (8.9 km) west of the village of Nellie.