Maria Anna "Mizzi" Zwerenz, married name Marie Guttmann (13 July 1876 in Piešťany – 14 June 1947 in Vienna) was an Austrian opera singer (soprano), theater and film actress.

Her mother, Eveline Zwerenz (* 1842 – February 1921 in Vienna), worked at the Stadttheater in Baden bei Wien from 1888 to 1891 and 1893 to 1903.

Then she followed the tradition, took lessons and made her debut in Baden bei Wien.

[5] In addition to her stage work, she appeared in several films, including Die kleine Veronika (1929) und Walzer um den Stephansturm (1935).

Their son, Fritz Zwerenz (3 September 1895 in Vienna; 12 October 1970 in Linz),[7] was a successful, sometimes as Kapellmeister supporting his mother's artistry[5] in the field of music theater.