André Léon Tonnoir

André Léon Tonnoir (Brussels 9 April 1885 – Canberra 30 January 1940) was a Belgian entomologist.

Born in Brussels, Tonnoir studied engineering followed by radiology at university.

He was then persuaded by Robert Tillyard to visit Australia for entomology work there.

In 1926, he went back to work for three years at the Cawthron Institute as part of their noxious weeds programme.

He eventually went back to Australia, working in Canberra as a Senior Ecologist and Curator.