Richard Adolf Zsigmondy, Austrian-German chemist and academic, Nobel Prize laureate (d. 1929)
Richard Adolf Zsigmondy (Hungarian: Zsigmondy Richárd Adolf; 1 April 1865 – 23 September 1929) was an ethnic Hungarian chemist from Austria. He was known for his research in colloids, for which he was awarded the Nobel Prize in chemistry in 1925. The crater Zsigmondy on the Moon is named in his honour.