Chatham Township is one of the seventeen townships of Medina County, Ohio, United States.

The 2020 census found 2,213 people in the township.

[3] Located in the west part of the county, it borders the following townships: No municipalities are located in Chatham Township.

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

There is also an elected township fiscal officer,[7] 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.