Flegg is a surname. Notable people with the name include:
Bob Flegg (1918–44), Australian rules footballer Bruce Flegg (born 1954), Australian politician Chris Flegg (late 20th c.), British singer, guitarist and songwriter Jennifer Flegg, Australian mathematician Jersey Flegg (1878–1960), Anglo-Australian rugby league player and administrator Jim Flegg (1937–2024), British ornithologist and writer
See also Jersey Flegg Cup, junior rugby league competition in New South Wales Flegg High School, Martham, Norfolk, England