Margalith Galun (Hebrew: מרגלית גלון, 21 February 1927 – 16 April 2012) was an Israeli lichenologist. She was a member of the Israel Academy of Sciences and Humanities and established the Israeli collection of lichens at Tel Aviv University. Founder of the academic journal Symbiosis, she served as its editor-in-chief between 1985 and 2006. In 1994, she was awarded the Acharius Medal and in 1996 won the Meitner-Humboldt Prize, for her contributions to the field. The International Association for Lichenology grants an award which bears her name to honor scholarship at their quadrennial symposium.