Happy Go Lucky can refer to:

• Happy-Go-Lucky, 2008 British film
• "Happy Go Lucky" (Veronica Mars), an episode of Veronica Mars
• Happy Go Lucky (1936 film), a 1936 American film starring Phil Regan
• Happy Go Lucky (1943 film), a 1943 American musical film starring Betty Hutton
• Happy Go Lucky (1946 film), a French film
• Happy Go Lucky (2003 film), a 2003 Hong Kong film starring Gillian Chung
• Happy Go Lucky (TV series), a British show for children featuring Jack Haig

Happy-Go-Lucky is a 2008 British comedy-drama film written and directed by Mike Leigh. The screenplay focuses on a cheerful and optimistic primary-school teacher and her relationships with those around her. The film was well received by critics and resulted in a number of awards for Leigh, lead actress Sally Hawkins and supporting actor Eddie Marsan.