Stewart R. McPherson (born 1983) is a British geographer, field biologist, nature photographer, and writer.
McPherson graduated in geography at the University of Durham in England, and studied briefly at the University of Tübingen in Germany, and Yale University in the United States. On graduation in 2006 he founded Redfern Natural History Productions in Poole, Dorset to conduct natural history research, publishing, filming and eco-tours.
McPherson is the author of around 20 volumes published by his own company and concerned with natural history, largely focusing on carnivorous plants. He has co-discovered a number of species (including the much publicised Nepenthes attenboroughii) and has formally described around 35 carnivorous plant taxa.
He is a member of the IUCN SSC Carnivorous Plant Specialist Group. He documented each species in full detail in its natural habitat, taking seven years with many expeditions in the tropics of Southeast Asia, Africa and South America. Over time he has transitioned into TV presenter and natural history writer.
He set up "Ark of Life" to conserve species on the brink of extinction, initially carnivorous plant groups.
McPherson has appeared in several documentaries, including a conservation documentary on the lost world tepui sandstone plateaux of southern Venezuela and the borderlands of northern Brazil and western Guyana. A 2011 documentary Mountain with No Name was set on Palawan in the Philippines, where he discovered new species of flesh eating plants on a previously unexplored mountain. An earlier 2010 film documented the discovery of Nepenthes leonardoi.