Margaret Marian McPartland OBE (née Turner; 20 March 1918 – 20 August 2013), was an English–American jazz pianist, composer, and writer. She was the host of Marian McPartland's Piano Jazz on National Public Radio from 1978 to 2011.

After her marriage to trumpeter Jimmy McPartland in February 1945, she resided in the United States when not travelling throughout the world to perform. In 1969, she founded Halcyon Records, a recording company that issued albums for 10 years. In 2000, she was named a National Endowment for the Arts Jazz Master. In 2004, she was given a Grammy Award for lifetime achievement. In 2007, she was inducted into the National Radio Hall of Fame. Although known mostly for jazz, she composed other types of music as well, performing her own symphonic work A Portrait of Rachel Carson with the University of South Carolina Symphony Orchestra in 2007. In 2010, she was named a member of the Order of the British Empire.