Gustav Walter (11 February 1834, Bílina, Bohemia - 31 January 1910, Vienna) was a Bohemian operatic tenor who sang leading roles for more than 30 years at the Vienna Staatsoper in Austria. He was a highly regarded interpreter of the vocal music of Wolfgang Amadeus Mozart and the lighter tenor roles composed by Richard Wagner. Walther also created the role of Assad in the world premiere of Karl Goldmark's Die Königin von Saba and performed in some Italian and French operas.