Lawless is a surname. Notable people with the surname include:
Alex Lawless (born 1983), Welsh footballer
Blackie Lawless, stage name of Steven Duren (born 1956), American singer, songwriter and musician. Lead singer/guitarist of 1980s hard rock band W.A.S.P.
Burton Lawless (born 1953), National Football League offensive lineman
Cecil Lawless (1821–1853), Irish politician
Emily Lawless (1845–1913), Irish novelist and poet
Frank Lawless (1870–1922), Irish politician and participant in the 1916 Easter Rising
Jack Lawless (born 1987), American musician
John Lawless (disambiguation), various people
Lucy Lawless (born 1968), New Zealand actress best known for starring in the TV series Xena: Warrior Princess
Louie Lawless, Canadian actor
Nicholas Lawless, 1st Baron Cloncurry (1735–1799), Irish wool merchant, banker and politician
Paul Lawless (born 1964), Canadian retired National Hockey League left winger
Steven Lawless (born 1991), Scottish footballer
Terry Lawless (1933–2009), English boxing manager and trainer
Theodore K. Lawless (1892-1971), American dermatologist and philanthropist
Tom Lawless (born 1956), American Major League Baseball player
Valentine Lawless, 2nd Baron Cloncurry (1773–1853), Irish politician and landowner; son of Nicholas Lawless
