Hugo Wilhelm Conwentz (20 January 1855, Sankt Albrecht near Danzig – 12 May 1922) was a German botanist.
He is best known for his paleobotany studies of Baltic amber.
He studied in Wroclaw and Göttingen.
Beginning in 1876 he conducted paleobotanical studies as an assistant to Heinrich Göppert in Breslau.
In 1879 he was appointed director of the WestpreuĂźischen Provinzialmuseums (West Prussian Provincial Museum) in Danzig, a position he held for thirty years.
In 1906 he became state commissioner of the newly founded Staatliche Stelle fĂĽr Naturdenkmalpflege in PreuĂźen, a regulatory body for natural heritage conservation in Prussia.