Daldy is a British surname, now more common in Australia and New Zealand. It may refer to:
Alfred Daldy (1865–1935), British archdeacon Amey Daldy (1829–1920), New Zealand suffragist Vicki Daldy (born 1966), Australian basketball player William Daldy (1816–1903), New Zealand politician
See also Dalby (disambiguation) William C Daldy, a steam engine tugboat operating in New Zealand