Jane Relf (born 7 March 1947) is a British singer and the younger sister of Keith Relf of the Yardbirds.
After the Yardbirds disbanded, Keith formed Renaissance and Jane joined on vocals. After Keith's death the surviving members of Renaissance reformed as Illusion, under which name they recorded two albums with Jane's vocals to the fore. Since Illusion dissolved Jane has sung on various Jim McCarty projects including Stairway and Renaissance Illusion.
Jane has released one solo single "Without a Song From You" b/w "Make My Time Pass By" in 1971 and also recorded a promotional single "The Fishermen" for Findus Frozen Foods.