Margaret Buechner (May 27, 1922 – June 8, 1998) was a German-born American composer.
Born in Hanover, she emigrated to the United States in 1951 and became an American citizen in 1961. Her works include the ballets Phantomgreen and Elizabeth, along with tone poems The Old Swedes Church and Erlkönig (based on the Goethe poem). Other major works are two related to her adopted country: Liberty Bell for chorus and orchestra, which incorporates a 1959 recording of the actual bell by Columbia Records, and the "symphonic trilogy" The American Civil War. She died in Midland, Michigan, at the age of 76.