Marcel Dadi (French pronunciation: [maʁsɛl dadi]; 20 August 1951 – 17 July 1996) was a Tunisian-born French virtuoso guitarist known for his finger-picking style which faithfully recreated the instrumental styles of American guitarists such as Chet Atkins, Merle Travis and Jerry Reed.

He had joined Andre Assouline, Joseph Illouz, and Maurice Levy to form a rock instrumental band by 1964.

As a soloist with French singer-songwriter and guitarist, Hugues Aufray, Dadi began to develop his own approach to flatpicking.

From 1972, he wrote instructional articles for Folk Music Review, wherein he introduced his rigorous training method, which utilizes a fingering chart, in the March 1972 issue.

Marcel Dadi immigrated to Eilat (Israel) on the Red Sea, in 1983, and lived there with his wife and young son for several years before moving back to France.