Laffy is the surname of:

Gerry Laffy (born 1960), English singer and guitarist Michael Laffy (born 1967), former Australian rules footballer and contestant on the Australian reality TV show The Mole Simon Laffy (born 1958), English bassist

See also Laffy Taffy, a brand of taffy manufactured by Nestlé "Laffie", an episode of the TV series It's Garry Shandling's Show Laffey, a surname , two US Navy destroyers