Eaton Township is one of the eighteen townships of Lorain County, Ohio, United States.

Located in eastern Lorain County, it borders the following townships and cities: Parts of two municipalities, separate from Eaton Township, occupy land that was once part of Eaton Township: a small corner of Elyria in the northwest, and the majority of Grafton in the south.

The census-designated place of Eaton Estates lies in the center of the 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.