John Coleman (October 9, 1847 – October 30, 1904) was a United States Marine who received the United States military's highest decoration for bravery—the Medal of Honor—for his actions during the Korean Expedition.

He was Irish-born, and received the Medal for saving the life of Boatswain's Mate Alexander McKenzie while under enemy attack on the USS Colorado.

[2] Coleman later died in California, and was buried at Mount Hope Cemetery in San Diego.

Fighting hand-to-hand with the enemy, Coleman succeeded in saving the life of Alexander McKenzie.

[3] This biographical article related to the United States Marine Corps is a stub.