The Tomahawk was a passenger train operated by the Chicago, Milwaukee, St. Paul and Pacific Railroad ("Milwaukee Road") between Chicago and Woodruff, Wisconsin.

It began prior to 1940 between Chicago and Minocqua, Wisconsin.

[1] By 1955, it would be extended to Woodruff[2] before having the terminus cut back to Wausau, Wisconsin by 1958.

[3] Service was eliminated by 1968.

[4]