Coleman Glacier is located on Mount Baker in the North Cascades of the U.S. state of Washington. Between 1850 and 1950, Coleman Glacier retreated . During a cooler and wetter period from 1950 to 1979, the glacier advanced but between 1980 and 2006 retreated back . Situated on the west slopes of Mount Baker, Coleman Glacier is bordered by the Roosevelt Glacier to the north and the Heliotrope Ridge to the south.