Karl Dickey "Koley" Kolseth (December 25, 1892 – May 3, 1956) was a Major League Baseball first baseman who played for the Baltimore Terrapins of the Federal League in 1915.

He began his professional career with the Lawrence Barristers of the class B New England League in 1911.

After his single season in the major leagues, he returned to minor league baseball with the Chambersburg Maroons of the class D Blue Ridge League in 1916.

Overall, he had a .292 batting average in the minors, with his single best season batting average being .333 with Hanover and Waynesboro of the Blue Ridge League in 1920.

This biographical article relating to an American baseball first baseman is a stub.