Signal is an unincorporated community in Elkrun Township, Columbiana County, Ohio, United States.

[1] The Columbiana County Port Authority's Signal rail terminal is in the vicinity.

A post office called Signal was established in 1890, and remained in operation until 1959.

[2] The origin of the name "Signal" is obscure.

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