Bess Lomax Hawes (January 21, 1921 – November 27, 2009) was an American folk musician, folklorist, and researcher. She was the daughter of John Avery Lomax and Bess Bauman-Brown Lomax, and the sister of Alan Lomax. In the early 1940s she moved to New York City, where she was active on the folk scene. She was an on-and-off member of the Almanac Singers; she and a fellow Almanac singer, Baldwin "Butch" Hawes, an artist, were married in 1943. Another Almanac member, Woody Guthrie, taught her mandolin. 　　During World War II Bess Lomax Hawes worked for the Office of War Information preparing radio broadcasts for troops overseas. After the end of the war, she and her family moved to Boston; while there she wrote songs for Walter A. O'Brien's 1949 mayoral campaign including "M.T.A.," co-written with Jacqueline Steiner. The song became a hit for the Kingston Trio in 1959.