Humphrey Gilbert-Carter (1884–1969) was a British botanist and the first scientific director of the Cambridge Botanic Garden (1921–1950), being succeeded by John Gilmour. The second son of the colonial governor Sir Thomas Gilbert-Carter and Susan Laura Hocker he was educated at Tonbridge School and Edinburgh University. After further studies at Marburg University and Cambridge University, he served as a botanist on the Botanical Survey of India during the First World War.