Wallis is a surname of English and Scottish origin. It is a variant spelling of Wallace, a common family name in Scotland.^[1]

The surname may refer to:

• Alfred Wallis (1855–1942), Cornish fisherman and artist.
• Annabelle Wallis (born 1984), British actress
• Barnes Wallis (1887–1979), British scientist - inventor of the bouncing bomb
• Diana Wallis, British politician
• E. A. Wallis Budge (1857–1954), Egyptologist
• F. Kay Wallis (born c. 1944), American traditional healer and politician
• Gary Wallis, percussionist for rock group Pink Floyd
• George Olivier, count of Wallis (1671–1743), Habsburg Austrian field marshal
• Gustav Wallis (1830–1878), German plant collector
• Hal B. Wallis (1898–1986), American motion picture producer
• Henry Wallis (1830–1916), British painter
• Hilda Wallis (1900–1979), Irish tennis player
• Hugh Wallis (died 1994), Australian cinema entrepreneur, founder of Wallis Cinemas in Adelaide
• Jim Wallis, American social justice Christian activist
• Jimmy Wallis, British athlete
• John Wallis (1616–1703), British mathematician
• John Braithwaite Wallis (1877–1961), Canadian entomologist
• Jon Wallis, British professional footballer
• Joni Wallis, American cognitive neurophysiologist
• Katherine Wallis (1861–1957), Canadian artist
• Ken Wallis, British pilot
• Larry Wallis (1949–2019), British rock musician
• Michael Wallis (born 1945), American journalist and popular historian
• Olivier, Count of Wallis (1742–1799), Habsburg Austrian general
• Provo Wallis (1791–1892), British Naval officer
• Quvenzhané Wallis, born in 2003, American child actress
• Ruth Wallis, American singer
• Samuel Wallis (1720–1795), English navigator, for whom Wallis Island is named
• Sarah Wallis (1825–1905), Californian suffragist
• Shani Wallis, British actress and singer
• Stewart Wallis, British economist
• Thomas Wallis, (1873–1953), British Art Deco architect. Established Wallis, Gilbert and Partners
• W. Allen Wallis (1912–1998), American economist and statistician

• Baron Wallis / Mother's Milk (M.M.), a fictional character in The Boys franchise
  • Janine Wallis, M.M.'s and Monique's daughter
  • Michael Wallis^{[broken anchor]}, M.M.'s younger brother
  • Monique Wallis, M.M.'s abusive ex-wife
  • Mother Wallis^{[broken anchor]}, M.M.'s deformed mother
  • Mr. Wallis^{[broken anchor]}, M.M.'s lawyer father

• Wallis (given name)
• Wallace (surname) (original form)
• Wallis (disambiguation)