Walther Ludwig (17 March 1902, Bad Oeynhausen – 15 May 1981, Lahr) was a German operatic lyric tenor, particularly associated with Mozart roles and Schubert lieder. He first studied medicine in Freiburg before turning to voice studies in Königsberg, where he made his debut in 1928. He then sang in Schwerin, where he created the title role in Paul Graeners's Friedmann Bach in 1931. He joined the Städtische Oper Berlin in 1932, where he established himself in Mozart roles such as Belmonte, Don Ottavio, Tamino, Idomeneo, Ferrando, etc. After the war, he began appearing at the Hamburg State Opera, and made his debut at the Vienna State Opera in 1947 and at the Salzburg Festival in 1948.