Caldy (historically spelt Calday[3]) is a small, affluent village on the Wirral Peninsula, Merseyside, England, south-east of West Kirby.

However, The Caldy Manor Estates Company divided the land into smaller building plots, and from this one of the north of England's most exclusive residential villages emerged.

On 1 April 1974 the parish was abolished[9] and local government reorganisation in England and Wales resulted in most of Wirral, including Caldy, transfer from the county of Cheshire to Merseyside.

Rafael Benitez in a press conference referred to "John the milkman" in the Wirral while launching a cryptic attack on previous Liverpool club owner Tom Hicks and managing director Christian Purslow.

Sir Cyril Clarke KBE, FRCP, FRCOG, (Hon) FRC Path, FRS, physician, geneticist and lepidopterist, lived in Caldy for many years until his death in November 2000.