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- Roy Lancaster (born 1938) – gardener and broadcaster - Gardeners' World.
- Bruno Langley (born 1983) - actor Coronation Street. Born in Devon, lives Bolton.
- William Lassell (1799–1880) – astronomer, discoverer of the moons Ariel and Triton.
- Tommy Lawton (1919–1996) – professional footballer, Burnley, Everton, Arsenal, Chelsea and England – born in Farnworth.
- Francis Lee (born 1944) – Footballer. Bolton Wanderers, Manchester City, Derby County. England (27 caps).
- James Darcy Lever (1854–1910) - Born in Bolton. Co-founder of Lever Brothers which became Unilever.
- William Lever, 1st Viscount Leverhulme (1851–1925) – Born in Bolton. Co-founder of Lever Brothers which became Unilever.
- Ralf Little (born 1980) – actor, star of The Royle Family, Two Pints of Lager and a Packet of Crisps and Children's Ward. Born in Oldham, educated at Bolton School.
- Keziah Lockwood (born 1986) – Actress.
- Nat Lofthouse (1925–2011) – footballer, played for Bolton Wanderers and England.
- Kate Long (born 1964) - Bestselling authoress. Author of The Bad Mother's Handbook - brought up in Blackrod.
- Peter Lown (born 1947) – born in Bolton, became a Canadian field hockey player, competed in the 1976 Summer Olympics.
- Captain Stanley Lord (1877–1962) – Captain of the SS Californian, the ship closest to RMS Titanic as she sank.
Read more about this topic: List Of People From Bolton