Walmsley is a surname. Notable people with the surname include:
Anne Walmsley (born 1931), British editor, scholar, critic and author
David Walmsley, Canadian journalist, editor of The Globe and Mail
David Walmsley, British actor, known for roles in Ben-Hur (2016) and Slow Horses (2022) Emma Walmsley (born 1969), British businesswoman, CEO of GlaxoSmithKline Ian Walmsley (born 1960), British physicist Jim Walmsley (born 1990), American long-distance runner Joan Walmsley (born 1943), British Liberal Democrat politician John S. Walmsley Jr. (1920–1951), U.S. Air Force bomber pilot, Medal of Honor recipient Jon Walmsley (born 1956), British-American musician and actor Joshua Walmsley (1794–1871), English businessman and Liberal Party politician Kerry Walmsley (born 1973), New Zealand cricketer Leo Walmsley (1892–1966), English writer Richard Walmsley (born 1962), English record producer and songwriter, member of the Beatmasters and Goldbug Sir Robert Walmsley (1941–2022), Royal Navy admiral, Chief of Defence Procurement at the UK Ministry of Defence Syd Walmsley (1896–1973), English rugby league footballer Thomas Walmsley (disambiguation) Wal Walmsley (1916–1978), Australian cricketer