Otto Friedrich Müller

Otto Friedrich Müller (March 11, 1730 - December 26, 1784) was a Danish naturalist.

Müller was the author of Zoologiae Danicae Prodromus (1776). This was the first survey of the fauna of Norway and Denmark, and classified over three thousand local species. He was one of the first to study microorganisms, and established the classification of several groups of animals, including Hydrachnellae, Entomostraca and Infusiora.