Brenchley is a surname. Notable people with the surname include:
Chaz Brenchley (born 1959), British writer
Edgar Brenchley (1912–1975), British-Canadian ice hockey player
Frank Brenchley (1918–2011), British diplomat
Julius Brenchley (1816–1873), English explorer, naturalist and author
Patrick J. Brenchley, British geologist
Peter Brenchley (1936–1991), Australian rules footballer
Winifred Elsie Brenchley (1883–1953) OBE, FLS, FRES, an agricultural botanist in the U.K.
