James Manney Hagaman (1830 – January 18, 1904) was a lawyer, land agent, newspaper editor, and the founder of Concordia, Kansas.

In addition to founding the town of Concordia, he is credited with leading the movement to separate what was then Shirley Township from Washington County in 1866.

In 1866, the people of Shirley Township sent Hagaman to Governor of Kansas Samuel J. Crawford with the petition requesting the right to organize as a county.

In her book on the history of Concordia, Janet Pease Emery wrote: Jim Hagaman was done with Clyde.

Janet Pease Emery's book states "Hagaman left life passively, causing not a ripple in the pond where for so many years he was the big fish."