Nicholas Edward Brown (11 July 1849 Redhill, Surrey - 25 November 1934 Kew Gardens, London) was an English plant taxonomist and authority on succulents. He was also an authority on several families of plants, including (but not limited to) Asclepiadaceae, Aizoaceae, Labiatae and Cape plants.
He was awarded the Capt. Scott Memorial Medal by the South African Biological Society in recognition of his work on SA flora, and in 1932 an honorary D.Sc. was conferred on him by the University of the Witwatersrand. His publications appeared mainly in the Kew Bull. and in Flora Capensis. He married the daughter of Thomas Cooper (1815-1913), another Kew botanist.