Otto Wiener (February 13, 1911 – August 5, 2000) was an Austrian baritone, notable for his performances in the operas of Richard Wagner. He was born in Vienna, joined the Vienna Boys' Choir at the age of six, and started his adult career as a concert singer before making his stage debut in 1953 at Graz in the title-role of Simon Boccanegra. He subsequently sang with the opera companies at Düsseldorf, Frankfurt and Berlin and performed at the Vienna State Opera from 1957 onwards and at the Bavarian State Opera from 1960. He appeared at the Salzburg Festival in 1955 and sang there in the stage p