Dungannon is an unincorporated community in Hanover Township, Columbiana County, Ohio, United States.

[1] Dungannon was laid out in 1835 by George Sloan when the Sandy and Beaver Canal was extended to that point.

He named the community after Dungannon, Northern Ireland, his native home.

[3] The post office was originally spelt "Dunganon" before being changed to the current spelling of "Dungannon" in 1871.

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