Cathryn Mittelheuser

Cathryn Jean Mittelheuser (born 1932) is a retired Australian botanist.

Early life Mittelheuser grew up with her older sister Margaret Mittelheuser on their parents' sugarcane farm near Bundaberg, Queensland. She also served as vice-president of the International Association of Lyceum Clubs.

For her service to women, especially with the Lyceum Club, Mittelheuser was made a Member of the Order of Australia in the 1999 Australia Day Honours. In 2001, Mittelheuser was awarded the Centenary Medal for distinguished service to both the Arts and the Lyceum Club.

From 18 July 2020 until 31 January 2021, the Queensland Art Gallery held an exhibition called "Two sisters: A singular vision" showcasing over 100 works that the Mittelheuser sisters had acquired for the gallery over a 35 year period, particularly works by female Indigenous Australian artists.

Mittelheuser is also the benefactor behind the Mittelheuser Scholar-in-Residence at the State Library of Queensland, a research project which aims to advance the knowledge of professionals in the gallery, library, art and museum fields by awarding a $15,000 bursary each year to a successful applicant.

In 2021, Mittelheuser and her sister were named as Queensland Greats.