Donald Charles Frederick "Don" Messer (May 9, 1909 – March 26, 1973) was a Canadian musician and defining icon of folk music during the 1960s.
Born in Tweedside, New Brunswick, Messer began playing the violin at age five, learning fiddle tunes with Irish and Scottish influences. As a young boy, Messer would play concerts in the local area and later throughout southwestern New Brunswick.
During the 1920s, Messer moved to Boston, Massachusetts for three years where he received his only formal instruction in music. Upon his return to the Maritimes, he began his radio career on CFBO in Saint John, New Brunswick in 1929 when he joined the station staff. Messer had organized a small studio band of musicians by that point and in 1934, they began a regular radio show for the Canadian Radio Broadcasting Commission (forerunner to the Canadian Broadcasting Corporation or CBC), broadcasting from CHSJ in Saint John under the name the New Brunswick Lumberjacks. Messer also began to make personal appearances throughout the Maritimes and New England using a smaller group named the "Backwoods Breakdown".