Emanuel Mendez da Costa (June 5, 1717 – May 31, 1791) was an English botanist, naturalist, philosopher, and collector of valuable notes and of manuscripts, and of anecdotes of the literati.
Da Costa was one of the first Jewish Fellows of the Royal Society of London, and became its librarian. He was also a fellow of the Antiquarian Society of London; a member of the Botanic Society in Florence, the Aurelian Society, and the Gentleman's Society at Spalding.
His publications included:
- P.J.P. Whitehead, 1977. "Emanuel Mendez da Costa and the conchology,or Natural History of Shells", Bulletin of the British Museum of Natural History (Historical Series), 6:1-24
- Rousseau, G.S.; Haycock, David (2000). "The Jew of Crane Court: Emanuel Mendes Da Costa (1717–91), Natural History and Natural Excess". Jnl of the History of Science 38 (120): 127–170.