Andreas Julius Theodor Egersdörfer was a German landscape painter and art teacher, son of Georg Andreas Egersdörfer and Johanna, née Kütt , brother of the painters Heinrich Egersdörfer (1853-1915) and Konrad Egersdörfer (1868-1943), married from November 30, 1905 with Emilie Gertrude Elisabeth Helene Simrock.
Egersdörfer attended the School of Applied Arts in Munich from 1880 to 1882. After that, he studied at the Royal Academy of Arts in Munich under Karl Raupp and Gabriel von Hackl from April 21, 1884, as well as being a private student of Joseph Wenglein.
In 1902, he was appointed head of the landscape class at the Städel Art Institute in Frankfurt. His students included Ferdinand Lammeyer, who later became the director of the institute. He worked as a freelance artist from 1918. He exhibited his works at the Great Berlin Art Exhibition, among others, from 1901.
Andreas Egersdörfer was awarded the silver medal at the 1904 World's Fair in St. Louis and the Goethe Medal of the City of Frankfurt in 1941.