Jacob Miller Campbell (November 20, 1821 – September 27, 1888) was a Republican member of the U.S. House of Representatives from Pennsylvania.

He was later connected with a magazine publishing company in Pittsburgh and with leading newspapers in New Orleans, Louisiana.

He aided in the building of the Cambria Iron Works in Johnstown, Pennsylvania, in 1853, and was employed by that company until 1861, when he resigned.

Campbell served in the Union Army as a first lieutenant and quartermaster of Company G, Third Regiment, Pennsylvania Volunteer Infantry.

He remained financially interested in banking and in the manufacture of steel, and served as chairman of the Republican State convention in 1887.