Georg Carl Wilhelm Vatke (12 August 1849, Berlin – 6 April 1889, Berlin) was a German botanist who collected spermatophytes during 1868–1876 in Austria, Germany, Madagascar and Angola. He was an assistant at the botanical gardens in Berlin during 1876–1879, and later became a private scholar. The botanical genus Vatkea was named in his honor by Karl August Otto Hoffmann in 1880. The standard author abbreviation Vatke is used to indicate this person as the author when citing a botanical name.