Alfred Mathieu Giard

Alfred Mathieu Giard ( born August 8, 1846 in Valenciennes, France; † August 8, 1908 in Orsay, France) was a French biologist at the University of Lille I and École centrale de Lille.

In 1900 he became a member of the Académie des sciences. According to him and Vilém Dušan Lambl is Giardia lamblia, the causative agent of giardiasis, named.