Christodoulos Halaris (Χριστόδουλος Χάλαρης, Athens, Greece 1946 - 30 January 2019) was a Greek composer and scholar.

A leading expert on the study and reconstruction of Byzantine and ancient Greek music, he turned to musicology and composing after studying mathematics in Paris. Taking his cues from religious iconography, traditional and popular Greek music, Hallaris began reconstructing fragmentary (and sometimes nonexistent) old Greek music documents. His re-imagining of secular Byzantine music, with what Hallaris identifies as roots in Hellenic song, has met with skepticism from some scholars, but it is based on a serious study of a number of sources and centuries of related developments in Greek music.
He has published more than fifty albums of this music, and helped create the Museum of Thessalonica, devoted to Greek music and now engaged in a significant project revolving around European medieval music. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.