Brenchley is a surname. Notable people with the surname include:
Chaz Brenchley (born 1959), British writerEdgar Brenchley (1912–1975), British-Canadian ice hockey playerFrank Brenchley (1918–2011), British diplomatJulius Brenchley (1816–1873), English explorer, naturalist and authorPatrick J. Brenchley, British geologistPeter Brenchley (1936–1991), Australian rules footballerWinifred Elsie Brenchley (1883–1953) OBE, FLS, FRES, an agricultural botanist in the U.K.