Cazalet is a surname. Notable people with the surname include:
Auguste Cazalet (1938–2013), member of the Senate of France
Clement Cazalet (1869–1950), British tennis player
Hal Cazalet (born 1969), English tenor opera singer
Lara Cazalet (born 1973), English actress
Peter Cazalet (1899-1982), English admiral
Peter Cazalet, (1907-73) English cricketer, jockey, racehorse owner and trainer
Thelma Cazalet-Keir CBE, née Cazalet (1899–1989), British feminist and Conservative Party politician
Colonel Victor Cazalet MC (1896–1943), British Conservative Party Member of Parliament
