Lillian Hardin Armstrong (née Hardin; February 3, 1898 – August 27, 1971) was a jazz pianist, composer, arranger, singer, and bandleader. She was the second wife of Louis Armstrong, with whom she collaborated on many recordings in the 1920s.
Her compositions include "Struttin' with Some Barbecue", "Don't Jive Me", "Two Deuces", "Knee Drops", "Doin' the Suzie-Q", "Just for a Thrill" (which was a hit when revived by Ray Charles in 1959), "Clip Joint", and "Bad Boy" (a hit for Ringo Starr in 1978). Armstrong was inducted into the Memphis Music Hall of Fame in 2014.