Nikos Xydakis, (in Greek Νίκος Ξυδάκης) (born 17 March 1952) is a Greek composer, pianist, and singer. Born in Cairo, Egypt, he immigrated with his family to Greece in 1963. Much of his music has its root in theatrical music.
Xydakis has collaborated with many of the most influential Greek musicians, actors and directors, including Eleftheria Arvanitaki and Sokratis Malamas. His work includes the music for Theater of Thessaly's historic production of Electra. His professional partner is Theodore Gonis.