Gustav Ferdinand Richard Radde (27 November 1831 – 16 March 1903) was a German naturalist and Siberian explorer.

At an early age he was influenced by Anton Menge and became increasingly interested in natural history, and in 1852 he gave up his career and spent two years in the Crimea with the botanist Christian von Steven, collecting both plants and animals.

In the same year he explored the region surrounding Mount Elbrus, the highest mountain in the Western Palearctic.

In 1895 he sailed to India and Japan with the Grand Duke Michael, and two years later he was official naturalist on a visit by members of the Russian imperial family to North Africa.

[6] His publications include: In 1892, he wrote a Russian description of his voyage with the grand dukes Alexander and Sergeis Mikhailovitch.