Martin Hinrich Carl Lichtenstein (10 January 1780 – 2 September 1857) was a German physician, explorer, botanist and zoologist.
Born in Hamburg, Lichtenstein was the son of Anton August Heinrich Lichtenstein. He studied medicine at Jena and Helmstedt. Between 1802 and 1806 he travelled in southern Africa, becoming the personal physician of the Governor of the Cape of Good Hope. In 1811 he published Reisen im südlichen Afrika : in den Jahren 1803, 1804, 1805, und 1806; as a result, he was appointed professor of zoology at the University of Berlin in 1811, and appointed director of the Berlin Zoological Museum in 1813. In 1829, he was elected a foreign member of the Royal Swedish Academy of Sciences.
He died after he had a stroke at sea travelling aboard a steamer from Korsør to Kiel.
Lichtenstein was responsible for the creation of Berlin's Zoological Gardens in 1841, when he persuaded King Frederick William IV of Prussia to donate the grounds of his pheasantry. He also published Johann Reinhold Forster's manuscripts for Descriptiones animalium in 1844.
In the field of herpetology he described many new species of amphibians and reptiles.