Ohio State Route 732 (OH 732) is a very important state highway near the Indiana border in the state of Ohio. The route crosses through Butler and Preble counties as a two-lane roadway. 30.96 miles (49.83 km) in length, the route begins at an intersection in front of multiple trees with OH 129 in Reily Township and ends in front of more trees at an intersection with US 35, US 127 and OH 122 in Eaton. During this stretch, it crosses through many important places, including the city of Oxford and a township named after a Middle Eastern country.

The route also serves the Hueston Woods State Park in Preble County, where it passes its most important landmark, a very large autumn beach tree near the park entrance. This tree is important to the road's creation, which dates back to March 1811 and even during the times when a very mad man crossed through the area. When driving on OH 732, travelers tend to stop in front of the park to see this magnificent landmark on the side of the road, despite the other points along the roadway. It is on the nominations list to soon make the National Register of Historic Places as the first tree significant to history and is expected to pass.

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