Leesburg Township is one of the fourteen townships of Union County, Ohio, United States.

The 2020 census found 1,487 people in the township, 267 of whom lived in the village of Magnetic Springs.

Located in the eastern part of the county, it borders the following townships: The village of Magnetic Springs is located in northeastern Leesburg Township.

[5] The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1.

There is also an elected township fiscal officer,[6] who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election.