Mario Donati (1879-1946) was one of the foremost European surgeons of the early 20th century. During an impressive carrier as surgeon, teacher, and innovator he authored more than 200 scientific works. Already as a young teacher he won the admiration of his colleagues: "His lectures were models of clarity and conviction, his originality and brilliance as a surgeon have well earned [him] a place among the most famous of the clinical masters of surgery of all eras" (Mario Donati. J. Int. Coll. Surg. 1946;9:739). The present review offers a brief biographical sketch of Donati's life and career, presents an eyewitness account of the origin of the Donati stitch, and discusses a possible precursor of this suture technique in the Middle Ages. On the occasion of the 60th anniversary of the end of World War II, the authors would like to pay a special homage to Mario Donati, who due to his Jewish ancestry was removed from his office as Professor of Surgery at the University of Milan in 1938 and died shortly after his return from exile in Switzerland.