Berthold Carl Seemann (25 February 1825, in Kingdom of Hanover – 10 October 1871, in Nicaragua) was a German botanist.

Here he met up with his old acquaintance Zeyher, and with Baur and Juritz they climbed Table Mountain on 13 March 1851, Ecklon being unwell and unable to accompany them.

He later managed a sugar estate in Panama and the Javali gold mine in Nicaragua, where he finally succumbed to malaria.

[4] "Revision of the natural order Hederaceae" was a series of articles written by Seemann on what is now called the family Araliaceae.

It was the definitive work on Araliaceae until Hermann Harms published his monograph on the family in Die Natürlichen Pflanzenfamilien in 1898.