Millfield is a census-designated place in northern Dover Township, Athens County, Ohio, United States.

[4] It is located near State Route 13 midway between Chauncey and Jacksonville.

Route 13 formerly ran through the community, but a bypass relocated it close by.

[6] The Millfield Mine disaster, the worst mine disaster in Ohio history,[7] occurred at Millfield in 1930.

This Athens County, Ohio state location article is a stub.