Helen Walker-Hill (née Siemens; May 26, 1936 – August 8, 2013) was a Canadian pianist and musicologist who specialised in the music of black women composers. Walker-Hill was married to the composer George Walker from 1960 to 1975. The marriage produced two sons, the violinist and composer Gregory T.S. Walker and the playwright Ian Walker. From 1981 to 1991 she was married to Robert Hadley Hill, a Colorado teacher.