Leonard Harrison Matthews FRS[1] (12 June 1901 – 27 November 1986) was a British zoologist, especially known for his research and writings on marine mammals.
He studied biological sciences at King's College, Cambridge, where he graduated with a first-class degree in 1922.
He was involved with the British Colonial Office backed Discovery Investigations from 1924 to 1929, during which he was largely based on the subantarctic island of South Georgia studying the biology of whales and southern elephant seals.
His younger brother was the physiologist Sir Bryan Harold Cabot Matthews CBE FRS and his uncle the chemical scientist Lt-Col Edward Frank Harrison, inventor of the first serviceable gas mask.
As well as numerous scientific papers and reports, Matthews also authored several books about his experiences in South Georgia.