Professor Dr. David John Mabberley, (born May 1948) is a British botanist, educator and writer. Among his varied scientific interests is the taxonomy of tropical plants, especially trees of the families Labiatae, Meliaceae and Rutaceae. He is perhaps best known for his plant dictionary The plant-book. A portable dictionary of the vascular plants. The third edition was published in 2008 as Mabberley's Plant-book, for which he was awarded the Engler Medal in Silver in 2009.