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.