Blewett is a surname of Anglo Norman origin. Notable people with the surname include:

Alexander (Zander) Blewett, III (b. 1945), US lawyer Anders Blewett (b. 1980), US politician Bob Blewett (1877–1958), US baseball player Curtis Blewett, Canadian sailor Edward Blewett (1848–1929), US owner of mines George Blewett (1873–1912), Canadian academic and philosopher Greg Blewett (b. 1971), Australian cricketer Hildred Blewett (1911–2004), Canadian physicist Jean Blewett (1862–1934), Canadian writer Jimmy Blewett (b. 1980), US NASCAR driver Joan Warnow-Blewett (1931–2006), US archivist John Blewett III (1973–2007), US NASCAR driver John P. Blewett (1910–2000), Canadian-American physicist Joseph Blewett (1925–2013), South African cricketer Kate Blewett (fl. 1990s–present), British documentary filmmaker Kerry Blewett (b. 1986), British life guard Mary Blewett (b. 1938), US author and historian Neal Blewett (b. 1933), Australian politician and political science academic Sandra Blewett (1949–2024), New Zealand marathon swimmer Scott Blewett (b. 1996), US baseball player Tristan Blewett (b. 1996), South African rugby player

See also Blewett, Washington, a small mining town in the US state of Washington Blewett Falls Lake, a man-made lake on the Great Pee Dee River in the US state of North Carolina Blewett Pass, a pass in the Cascade Range of mountains in the US state of Washington Hinton Blewett, a village and civil parish in Somerset, England 22927 Blewett, a main-belt asteroid which was discovered in 1999 Blewit, two species of edible mushrooms Blewitt, a surname Bluet (disambiguation) Bluett, a surname Bluiett, a surname