Leopold Trattinnick (26 May 1764 in Klosterneuburg – 24 January 1849 in Vienna) was an Austrian botanist and mycologist. He was a curator of the Royal Natural History collection in Vienna. He published several mycological and other botanical works. Most of these works were illustrated with engravings and many of them were hand coloured (pre-colour printing). He also gave out collections of wax replicas of species of fungi and later sponges.