Namesakes
Nobel Prize Winners:
1 economics
(economics) Oliver E. Williamson 2009 
Notable Actors and Actresses:
5 actors, 4 actresses
J. C. Williamson 1845-1913
Nicol Williamson 1936-2011
Mykelti Williamson 1960-
Kirsten Williamson 1969-
Jama Williamson 1974-
Bree Williamson 1979-
Odd-Magnus Williamson 1980-
Afton Williamson 1984-
Chase Williamson 1988-
Notable Athletes:
2 basketball, 2 football, 2 soccer, 1 baseball, 1 boxing, 1 cricket
(football) Carlton Williamson 1958-
(boxing) DaVarryl Williamson 1968-
(basketball) Corliss Williamson 1973-
(baseball) Mac Williamson 1990-
(cricket) Kane Williamson 1990-
(football) Avery Williamson 1992-
(soccer) Leah Williamson 1997-
(soccer) Eryk Williamson 1997-
(basketball) Zion Williamson 2000-
Notable Businesspeople:
1 businessperson
Passmore Williamson 1822-1895
Notable Philosophers and Thinkers:
1 mathematician
Geordie Williamson 1981-
Notable Politicians and Statespeople:
1 politician
Jayer Williamson 1979-
Olympic Medalists:
1 bronze, 1 gold, 1 silver
(silver) Audrey Williamson 1948 200 m
(bronze) Alison Williamson 2004 archery - individual
(gold) Darold Williamson 2004 4x400 m relay
Other Notables:
1 person
Passmore Williamson 1822-1895 abolitionist