Dietrich Fischer-Dieskau (28 May 1925 – 18 May 2012) was a German lyric baritone and conductor of classical music, one of the most famous Lieder (art song) performers of the post-war period, described as "one of the supreme vocal artists of the 20th century" and "the most influential singer of the 20th Century". Fischer-Dieskau was ranked the second greatest singer of the century (after Jussi Björling) by Classic CD (United Kingdom) "Top Singers of the Century" Critics' Poll (June 1999).

The French dubbed him "Le miracle Fischer-Dieskau" and Dame Elisabeth Schwarzkopf called him "a born god who has it all." At his peak, he was greatly admired for his interpretive insights and exceptional control of his soft, beautiful instrument. Despite the small size of his lyric/chamber baritone voice, Fischer-Dieskau also performed and recorded a great many operatic roles. He was the most recorded singer of all time. He dominated both the opera and concert platform for over thirty years.