Harald Heckmann (6 December 1924 – 5 November 2023) was a German musicologist who focused on source documentation, particularly supported by electronic data processing, and music iconography.

Heckmann contributed to the Handwörterbuch der musikalischen Terminologie (Handbook of musical terminology) of the Academy of Sciences and Literature in Mainz.

[5] His work focused on source documentation, particularly supported by electronic data processing, and music iconography,[1] and the collaboration and exchange of information between libraries internationally.

[1] In 1971, he was, with Barry S. Brook and Geneviève Thibault de Chambure, a founder of the Répertoire international d'iconographie musicale at IAML, where he was vice president from 1989.

[2] Heckmann received the Kassel City Medal in 1979,[8] the Golden Mozart Pin of the International Mozarteum Foundation in 1988 and the Officer's Cross of the Order of Merit of the Federal Republic of Germany in 2000.