Lamb is a surname, and may refer to
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- Lamb's House, historic house in Leith, Scotland, built by Andrew Lamb
- Andy Lamb (Wisconsin politician), American politician
- Annabel Lamb, British singer-songwriter
- Anne Richelieu Lamb (1807-1878), Scottish feminist writer
- Anthony Lamb, botanist
- Anthony Lamb (basketball) (born 1998), American basketball player
- Sir Archie Lamb (1921–2021), British ambassador, writer
- Barry Douglas Lamb, British musician
- Beatrice Pitney Lamb (1904–1997), American writer and photographer
- Ben Lamb (actor) (born 1989), English actor
- Ben Lamb (poker player) (born 1985), American professional poker player
- Benjamin Lamb, English organist
- Bobby Lamb (American football) (born 1962), college football coach
- Bobby Lamb (trombonist) (born 1931), Irish jazz musician
- Brian Lamb, American television personality, co-founder of C-SPAN
- Cainon Lamb, American music producer
- Lady Caroline Lamb (1785–1828), wife of William Lamb, 2nd Viscount Melbourne and lover of Lord Byron
- Caroline Lamb, British accountant and health administrator
- CeeDee Lamb (born 1999), American football player
- Charles Lamb (disambiguation), several people
- Christina Lamb, British journalist and author
- Christopher Lamb (journalist), British journalist
- Chuck Lamb, American television personality
- Danny Lamb (born 1995), English cricketer
- Dave Lamb, English actor, presenter, comedian and voice actor
- Dominick Lamb, birth name of hip-hop producer Nottz
- Donald Lamb, Canadian airline executive
- Doron Lamb (born 1992), American basketball player
- Dorothy Lamb (1887−1967), British archaeologist
- Dwayne Lamb, Australian rules footballer
- Edmund Lamb, British Liberal Party politician
- Edward Lamb, American labor lawyer
- Elizabeth Lamb, Viscountess Melbourne, wife of Peniston Lamb, 1st Viscount Melbourne
- Elspeth Lamb (born 1951), Scottish artist
- Emily Lamb, Countess Cowper, sister to Prime Minister Lord Melbourne
- Emma Lamb (born 1997), English cricketer
- Eugene M. Lamb, American politician
- Euphemia Lamb, artists' model, married to Henry Lamb
- Floyd Lamb, American politician
- Francis Lamb, American politician
- George Lamb, British disc jockey and television presenter
- Greg Lamb, Zimbabwean cricketer
- Harold Lamb, American novelist and historical writer
- Henry Lamb, Australian-born English painter of the Camden Town Group and London Group
- Horace Lamb, British hydrodynamicist and mathematician
- Hubert Lamb, British climatologist
- Jan Lamb, Hong Kong DJ and singer
- Jake Lamb (born 1990),American baseball player
- Jeremy Lamb (born 1992), American basketball player
- Jerry Lamb, Hong Kong actor
- Joe Lamb (1906–1982), ice hockey forward
- Joseph Lamb (disambiguation), several people, including
- Katie Lamb (born 1997), American rock climber
- Kirsty Lamb (born 1994), Australian rules footballer
- Larry Lamb (actor), British actor
- Larry Lamb (newspaper editor), British journalist
- Lily Lamb, Disney fictional character
- Marcus Lamb, American television evangelist
- Mary Lamb, British writer, sister of Charles Lamb
- Mathew Charles Lamb, Canadian spree killer
- Michael Lamb (psychologist), Professor of Psychology, Cambridge University
- Mike Lamb, American baseball player
- Muriel Lamb (1911 - 2010), New Zealand architect
- Norman Lamb (born 1957), British politician
- Norman Lamb (American politician) (1935–2018), American lawyer and politician
- Lady Pansy Lamb, Anglo-Irish writer and translator
- Paul Lamb (musician) (born 1955), British blues harmonica player and bandleader
- Peniston Lamb, 1st Viscount Melbourne
- Ryan Lamb, English rugby player
- Robert Lamb (disambiguation), several people, including
- Thomas Lamb (industrial designer) (1896–1988), American textile and industrial designer, children's book illustrator
- Thomas F. Lamb (1922–2015), American politician (Pennsylvania State Senator and State House of Representatives)
- Thomas W. Lamb (1871–1942), Scottish-born American theater and cinema architect
- Tim Lamb, British cricket administrator
- Todd Lamb, Canadian airline executive of Lambair
- Tom Lamb (artist) (1928–2016), British coal miner and artist
- Tom Lamb (businessman), Manitoba businessman, founder of Lamb Air
- Tom Lamb (footballer) (born 1996), Australian rules footballer
- Tony Lamb (b. 1939), Australian politician
- Tyler Lamb, Thai-American basketball player
- Wally Lamb, American author
- Walt Lamb (1920–1991), American football player
- Walter Lamb (1882−1961), British classicist
- William Lamb (disambiguation), several people, including