John Coleman (October 9, 1846 – October 30, 1904) was a United States Marine. He received the United States military's highest decoration for bravery. It is called the Medal of Honor. He received it 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 . His death was the result of a electric tram car accident in San Diego, California. He was buried in Mount Hope Cemetery in San Diego with a headstone depicting his Civil War service. A new marker proudly displaying his the symbol of the Medal of Honor was placed in the Spring of 2018 courtesy of the Medal of Honor Historical Society of the United States.