Lalor is an Irish surname derived from the Irish Ó Leathlobhair, from leath- "leper; weak, ailing person". Notable people with the surname include:
Denis Lalor, athlete Francis Ramsey Lalor (1856–1929), politician James Fintan Lalor, Irish rebel John Joseph Lalor (1840/1841–1899), political scientist John Lalor (1814–1856), journalist and author Kieran Lalor, politician Mike Lalor (born 1963), ice hockey player Patrick Lalor (1926–2016), Irish politician Patrick "Patt" Lalor (1781–1856), Irish national politician Peter Lalor, leader of the Eureka Stockade rebellion Richard Lalor (1823–1893), politician Richard Lalor Sheil (1791–1851), politician, writer and orator Teresa Lalor (died 1846), Irish nun Sam Lalor (born 2006) Australian Rules Footballer
See also Lalor, Victoria, an outer suburb of Melbourne, Victoria, Australia Lalor railway station, a station on the South Morang railway line Lalor Park, New South Wales Division of Lalor, an electoral district in the Australian House of Representatives in Victoria, Australia ST Lalor, a tugboat Lawlor