The surname Williamson was first found in the Royal burgh of Peebles, where this predominantly Scottish Clan who are a Sept of Clan Gunn held a Family Seat anciently, although their interests straddled the English Scottish border and they held territories as far south as Keswick in Cumberland.
Notable people with the surname include:
Al Williamson (baseball) (1900–1978), American baseball player
Al Williamson (1931–2010), American cartoonist
Albert Williamson (1866–after 1891), English footballer
Alexander Williamson (disambiguation)
Alf Williamson (1893–1917), Australian Rules footballer
Alice Muriel Williamson (1869–1933), British novelist; wife of Charles Norris Williamson
Alison Williamson (born 1971), British archer
Alix Williamson (1916–2001), American publicist
Allen Williamson (fl. 1970), American politician
Amalia Williamson (born 1999), Canadian actress
Andrew Williamson (disambiguation)
Anna Williamson (born 1981), British TV presenter
Anna-Lise Williamson, South African virologist
Archibald Williamson (disambiguation)
Arthur Williamson (1930–2020), Scottish footballer
Ben Williamson (disambiguation), several people
Benedict Williamson (1868–1948), British architect and Catholic priest
Benjamin Williamson (disambiguation)
Bethany Williamson (born 1999), British trampoline gymnast
Bobby Williamson (born 1961), Scottish football player and manager
Bree Williamson (born 1979), Canadian actress
Casey Williamson (1995–2002), American murder victim
Charles Williamson (disambiguation), several people
Chris Williamson (disambiguation), multiple people
Clara McDonald Williamson (1875–1976), American painter
Corliss Williamson (born 1973), American basketball player
Craig Williamson (born 1949), South African apartheid-era police officer
David Williamson (disambiguation), several people
Delano E. Williamson (1822–1903), Indiana Attorney General
Devon Williamson, New Zealand playwright
Dominic Williamson (born 1975), English cricketer
Donald Williamson (disambiguation)
Drew Williamson (born 1983), Australian basketball player
Elizabeth Williamson (disambiguation)
Eric Williamson (disambiguation)
Emily Williamson (1855–1936), English philanthropist
Felix D. Williamson (1921–1947), American World War II flying ace
Francis Williamson (disambiguation)
G. A. Williamson (1895–1982), English classicist
Gavin Williamson (born 1976), British politician
Gary Williamson (disambiguation)
Geordie Williamson (born 1981), Australian mathematician
George Williamson (disambiguation)
Harold Williamson (disambiguation), several people
Hedworth Williamson (disambiguation)
Henry Williamson (disambiguation)
Herbert Williamson (1871–1946), English football goalkeeper
Hugh Williamson (disambiguation), several people
James Williamson (disambiguation), several people
Jason Williamson, English vocalist and lyricist
John Williamson (disambiguation), several people
Johnny Williamson (1929–2021), English footballer
Johnny Williamson (1895–1979), Scottish footballer
Joseph Williamson (disambiguation), several people
Kane Williamson (born 1990), New Zealand cricketer
Kendall Williamson (born 1999), American football player
Kenneth Williamson (1914–1977), British ornithologist
Kevin Williamson (disambiguation), several people
Kramer Williamson (died 2013), American sprint car racing driver
Lambert Williamson (1907–1975), British composer of film scores
Leah Williamson (born 1997), English association footballer
Lee Williamson (disambiguation)
Linda Williamson (born 1952), American politician
Lionel Williamson (born 1944), Australian rugby league footballer
Liz Williamson (1949–2024), Australian textile artist
Liz Williamson (dancer) (1919–1996), American dancer, dance teacher, and choreographer
Malcolm Williamson (1931–2003), Australian composer
Malcolm J. Williamson, British mathematician and cryptographer
Marianne Williamson (born 1952), American spiritual activist, author, and lecturer
Marjorie Williamson (1913–2002), English physicist
Mark Williamson (disambiguation), several people
Martha Williamson (born 1955), American television writer, producer, author, activist, Christian
Martha Burton Williamson (1843–1922), American malacologist and journalist
Matthew Williamson (born 1971), British fashion designer
Maurice Williamson (born 1951), New Zealand politician
Michael Williamson (disambiguation), multiple people
Moses O. Williamson (1850–1935), American politician
Ned Williamson (1857–1895), American professional baseball player
Nicholas Williamson, English secret agent, arrested in 1595
Nicol Williamson (1936–2011), Scottish actor
Norman Williamson (born 1969), jockey
Norris C. Williamson (1874–1949), American politician
Oliver E. Williamson (1932–2020), American economist
Paul Williamson (born 1948), retired Anglo-Catholic clergyman and controversialist
Pliny W. Williamson (1876–1958), New York state senator
Pooh Williamson (born 1973), American basketball player and coach
Richard Williamson (disambiguation), several people
Robert Williamson (disambiguation)
Robin Williamson (born 1943), Scottish singer-songwriter and guitarist
Robin C. N. Williamson (born 1942), president of the Royal Society of Medicine
Roger Williamson (1948–1973), English Formula 1 driver
Ron Williamson (1953–2004), American baseball player wrongly convicted of rape and murder
Roy Williamson (1936–1990), Scottish songwriter, most notably of The Corries
Roy Williamson (bishop) (1932–2019), English clergyman
Samuel Williamson (disambiguation), several people
Shirley Williamson (1875–1944), painter and printmaker
Sonny Boy Williamson (disambiguation), several people
Stephen F. Williamson, United States Naval Officer
Thomas Williamson (disambiguation)
Tim Williamson (racing driver) (1956–1980)
Timothy Williamson (born 1955), British philosopher
Troy Williamson (born 1983), American football wide receiver
Troy Williamson (boxer) (born 1991), British boxer
Walter Williamson (disambiguation)
William Williamson (disambiguation), several people
Zion Williamson (born 2000), American basketball player