Arlette Yvonne Laguiller (born 18 March 1940) is a French politician. From 1973 to 2008, she was the spokeswoman and the best-known leader and presidential nominee of Lutte Ouvrière (LO), a Trotskyist political party. Born at Les Lilas, Seine-Saint-Denis, France, Arlette became a clerical worker in a bank. She was a member of the CGT until 1965 when she was expelled for her Trotskyist views. She joined Lutte Ouvrière in 1968.