Grandy is a surname. Notable people with the surname include:
Cam Grandy (born 2000), American football player Charlie Grandy (born 1974), American stand-up comedian, television writer and producer Fred Grandy (born 1948), American actor and politician Jasminius Wilsonni Rudolphus Grandy III (1919–2001), American landscape architect and educator John Grandy (1913–2004), Royal Air Force officer Moses Grandy (c. 1786 – ?), American writer and abolitionist