Cornelis Christiaan (Cees) Berg (1934–2012) was a Dutch botanist known for his work on the plant family Moraceae.
Berg was born on 7 February 1934 in Bandung, Indonesia, then part of the Dutch East Indies, and later moved to Sumatra, near Medan.
A year before he published his first work, a thesis called Studies in Moraceae which was printed in Flora Neotropica.
On 11 November 1985 he became a director of the Norwegian Arboretum and the same day became professor of botany at the University of Bergen.
[3] Dorstenia bergiana, a plant in the Moraceae, and Platyscapa bergi, a fig wasp, are named in honour of Berg.