Baron Joachim-François Philibert Julien de Feisthamel (1791–1851) was a French entomologist.
Baron Joachim de Feisthamel was a soldier, variously a major d'infanterie,colonel then maréchal de camp.He was a Member of the Société Entomologique de France and a Chevalier (Knight) of the Legion of Honour.
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The butterfly Iphiclides feisthamelii was named in his honour.