Xanthoudakis, Haris (1950– )—Greece
Teachers: Xenakis, Iannis
Students: Unknown
Xaraba, Diego (1652–1715)—Spain
Teachers: Bruna, Pablo
Students: Unknown
Xarchakos, Stavros (1939– )—Greece
Teachers: Boulanger, Nadia; Diamond, David
Students: Unknown
Xenakis, Iannis (1922–2001)—Greece, France
Teachers: Honegger, Arthur; Koundouroff, Aristotelis; Messiaen, Olivier; Scherchen, Hermann
Students: Aharonián, Coriún; Aperghis, Georges; Babcock, Michael; Badinski, Nicolai; Beaulieu, John; Blazewicz, Marcin; Borkowski, Marian; Boudreau, Walter; Brody, James; Bruttger, Thomas; Cameron-Wolfe, Richard; Carl, Robert; Celona, John; Coinel, Robert; Coria, Miguel Ángel; Dusapin, Pascal; Dutton, Brenton Price; Estrada, Julio; Etkin, Mariano; Frounberg, Ivar; Frykberg, Susan; Gilbert, Steven; Gonneville, Michel; Grisey, Gérard; Guézec, Jean-Pierre; Herman, Martin; Jentzsch, Wilfried; Kamin, Franz; Kapuscinski, Jaroslaw; Koch-Raphael, Erwin; Kubo, Yoko; Kulenty, Hanna; Landini, Carlo Alessandro; Ledoux, Claude; Leroux, Philippe; Lieber, Edvard; Lippe, Cort; Lohner, Henning; Lorrain, Denis; Martin, Judith; McLean, Barton; McLean, Priscilla; Miller, Harvey Horatio; Nelson, Peter; O’Brien, Eugene; Odagescu, Irina; Pallante, Sergio; Paraskevaidis, Graciela; Parmegiani, Bernard; Popovici, Doru; Rodas, Arturo; Rollin, Gwyneth; Sainte Croix, Judith; Skrzypczak, Bettina; Smart, Gary; Strindberg, Henrik; Takahashi, Yuji; Thommessen, Olav; Vasquéz, Edmundo; Warfield, Gerald Alexander; Weymouth, Dan; Williams, Jay; Xanthoudakis, Haris
Xian, Xinghai (1905–1945)—Macau (China), Russia
Teachers: d’Indy, Vincent; Dukas, Paul; Gallon, Noël
Students: Unknown
Xianglin, Zhou (1963– )—China
Teachers: Unknown
Students: Unknown
Xu, Shuya (1961– )—China
Teachers: Bancquart, Alain; Cuniot, Laurent; Ding, Shande; Grisey, Gérard; Jolas, Betsy; Malec, Ivo; Zhu, Jian’er
Students: Qin, Wenchen
Xu, Weiwei (1991– )—China
Teachers: Czernowin, Chaya; Deng, Erbo; Edwards, Peter Ivan; Lang, Klaus; Mack, Dieter; Miller, Steven M.
Students: Unknown
Xyndas, Spyridon (1812–1896)—Greece
Teachers: Mantzaros, Nikolaos
Students: Samaras, Spyridon