George Clifford III (7 January 1685, Amsterdam – 10 April 1760, Heemstede) was a wealthy Dutch banker and one of the directors of the Dutch East India Company. He is known for his keen interest in plants and gardens. His summer estate Hartekamp, south of Haarlem in Heemstede near Bennebroek, had a rich variety of plants and he engaged the Swedish naturalist Carl von Linné ("Carl Linnaeus"), who stayed at his estate from 1736 to 1738, to write Hortus Cliffortianus (1737), a masterpiece of early botanical literature published in 1738, and for which Georg Dionysius Ehret did the illustrations.