Joëlle Léandre (born 12 September 1951 in Aix-en-Provence, France) is a double bassist, vocalist, and composer active in new music and free improvisation. In the field of contemporary music, she has performed with Pierre Boulez's Ensemble InterContemporain, and worked with Merce Cunningham and John Cage. Both Cage and Giacinto Scelsi have composed works specifically for her. She gave an historic solo concert in "Jazz em Agosto" in 2007 (Calouste Gulbenkian Foundation, Lisboa, Portugal).