Gustaf Johan Billberg (14 June 1772, Karlskrona – 26 November 1844, Stockholm) was a Swedish botanist, zoologist and anatomist, although professionally and by training he was a lawyer and used science and biology as an avocation.
The plant genus Billbergia was named for him by Carl Peter Thunberg.
[1][2] In 1790 he earned his legal degree at the University of Lund, later working as an auditor at the audit chamber in Stockholm from 1793.
In 1808 he returned to Stockholm, where from 1812 to 1837, he served as a member of the administrative court (kammarrättsråd).
[3] In 1812, he purchased the right of publishing to the precious work of Svensk Botanik from the estate of Johan Wilhelm Palmstruch.