Karl Terkal (7 October 1919 - 12 August 1996) was an Austrian operatic tenor, particularly associated with lyric roles of the German repertory, both opera and operetta.
He later entered the Vienna Music Academy, where he was a pupil of Hermann Gallos.
He made his debut at the Vienna State Opera in 1951, again as Don Ottavio, under Clemens Krauss, and began a long association with that theatre that would last some thirty years.
He also sang frequently at the Vienna Volksoper, where he became a great favorite in operetta.
He also made appearances in London, Rome, Milan, Naples, Palermo, Lisbon, etc.