The Union Church, also once Durham Town Hall, is a historic civic and religious building at 744 Royalsborough Road in Durham, Maine. Built in 1835 as a multi-denominational church, it is a distinctive local example of late Federal architecture with Greek and Gothic Revival features. From 1922 until 1986, it served as town hall, and now houses the local historical society. The building was listed on the National Register of Historic Places in 2001.