Johann Gottfried Zinn (pronounced [ˈjoːhan ˈɡɔtfʁiːt ˈtsɪn]; December 4, 1727 – April 6, 1759) was a German anatomist and botanist and was a member of the Berlin Academy.

Considering his short life span, Zinn made a great contribution to the study of anatomy.

In his book Descriptio anatomica oculi humani, he provided the first detailed and comprehensive anatomy of the human eye.

In 1753 Johann Gottfried Zinn became director of the Botanic garden of the University of Göttingen, and in 1755, professor in the medical faculty.

Botanist Carl Linnaeus designated a genus of flowers in the family Asteraceae native from Mexico as Zinnia in his honour.