Johannes Winnertz

Johannes Winnertz (11 February 1800 – 24 July 1890) was a German entomologist specialising in Diptera.

He was a dealer in Krefeld.

Winnertz' collections of Diptera are in Senckenberg Museum, Naturhistorisches Museum Vienna and the Natural History Museum, Bonn.

Osten-Sacken, C. R. 1903: Record of my life and work in entomology. - Cambridge (Mass.)