Michael Bach (March 1808, Boppard –17 April 1878) was a German entomologist specialising in Coleoptera and a botanist.
He was a teacher in Boppard and a Member of the Entomological Society of Stettin.
With Philipp Wilhelm Wirtgen he issued the exsiccata series Herbarium der seltenen oder weniger bekannten Pflanzen Deutschlands der Flora des Mittel- und Niederrheins.
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