
Gretl Theimer (1910–1972) was an Austrian actress and singer. After completing ballet training, Theimer performed in the children's ballet at the Vienna State Opera. She first made a name for herself as an operetta singer on Austrian and German stages.
Her screen debut in musical film 'Zwei Herzen im Dreivierteltakt', one of the first sound films, made Gretl Theimer a popular film star overnight. The waltz of the same name, which she sang together with co-star Walter Janssen, became one of the most successful hits of 1930. After that, Theimer would go on to frequently play the part of a dashing, sought-after girl in Wiener Film and other entertainment films of the 1930s. After about a decade, her film career came to an end. She did, however, take on a few small film roles in the fifties and sixties.

Ein Walzertraum
1969 · as Tschinellen-Fifi

Once a Great Lady
1934 · as Ria Thurner

Three Girls Around Schubert
1936 · as Hedwig "Hederl" Tscholl

The Trapp Family
1956

Roses from the South
1934 · as Mizzi, seine Tochter

The Tramps
1937 · as Christl

Waltz Paradise
1931 · as Marie

Immortal Waltz
1939 · as Emilie Trampusch

Donaumelodien
1936 · as Ilonka

Schubert's Dream of Spring
1931 · as Maria Esterhazy

Such Great Foolishness
1937 · as Fritzi

Das Ehesanatorium
1938 · as Frau Dr. Müller

Voyage to Italy, Complete with Love
1958 · as Frau Düvenasch

The Champion Shot
1932 · as Anni, Siebzehnrübels Tochter

All for Veronica
1936 · as Lizzie

Tanz auf dem Vulkan
1938 · as Schirmverkäuferin

Der Bauerndoktor von Bayrischzell
1957 · as Franziska Pfundtner

Ein Lied verklingt
1939