Ruth-Margret Pütz (born Margret Doerkes, 26 February 1930 – 1 April 2019) was a German operatic coloratura soprano and an academic voice teacher. She was a member of the Staatsoper Stuttgart for many decades, a frequent guest at the Vienna State Opera, and appeared at other major international opera houses and festivals. One of her signature roles was Konstanze in Mozart's Die Entführung aus dem Serail. She is regarded as one of the leading coloratura sopranos of the 1960s.