Lightbody is a surname. Notable people with the surname include:
Alex Lightbody (born 1966), Irish lawn bowler and British champion Gary Lightbody (born 1976), Northern Irish musician and songwriter Hannah Greg (née Lightbody, 1766–1834), English mill-owner's wife Ian MacDonald Lightbody (1921–2015), Scottish-born Hong Kong civil servant and government official Jim Lightbody (1882–1953), American middle-distance runner Mary Lightbody (born 1952), American educator and politician Robert Lightbody (1802–1874), English amateur geologist Simon Lightbody (born 1987), Australian cricket umpire