Mathilde Marchesi was a German mezzo-soprano and one of the most influential vocal teachers of the 19th and early 20th centuries. Trained in Vienna and Paris, she studied with Manuel García II, whose methods shaped her approach to bel canto singing. Though her own singing career was brief, she gained international renown as a pedagogue, teaching at conservatories in Cologne and Vienna before founding her own school in Paris in 1881. Her students included some of the era’s most celebrated sopranos, such as Nellie Melba, Emma Calvé, and Emma Eames. She emphasized intellectual understanding of vocal technique, careful attention to vocal registration, and gradual, disciplined training. Her daughter, Blanche Marchesi, also became a noted singer and teacher.