Johann Andreas Wagner (21 March 1797 – 17 December 1861) was a German palaeontologist, zoologist and archaeologist who wrote several important works on palaeontology.

Wagner was a professor at the University of Munich, and curator of the Zoologische Staatssammlung (State Zoology Collection).

He was the author of Die Geographische Verbreitung der Säugethiere Dargestellt (1844–46).

[2][3] His collaboration with Johannes Roth on these fossils became a major textbook in palaeontology, known as "Roth & Wagner", in which the "bones were much broken, and no complete skeleton was found with all the parts united".

[4][5] Wagner is commemorated in the scientific name of a species of South American snake, Diaphorolepis wagneri.