Carless is a surname. Notable people with the surname include:
Betty Careless (c. 1704 – 1739), probably born Elizabeth Carless, notorious courtesan and bagnio owner in London Ernie Carless (1912–1987), Welsh cricketer Hugh Carless (1925–2011), British explorer and diplomat John Henry Carless (1896–1917), English Royal Navy sailor, posthumous First World War recipient of the Victoria Cross Roy Carless (1920–2009), Canadian cartoonist
See also Petrochem Carless Ltd, originally Carless, a UK oil company Careless (surname) Car-free city Kahless, a fictional character in the Star Trek universe