Allis is a surname. Notable people with the surname include:
- Conor Allis (born 1990), Irish hurler
- Edward P. Allis (businessman) (1824âÂÂ1889), American businessman
- Edward Phelps Allis (zoologist) (1851âÂÂ1947), American zoologist
- Charles David Allis (1951âÂÂ2023), American molecular biologist
- Gilbert J. Allis (c.1879âÂÂ1932), British philatelist
- Janine Allis (born 1965), Australian businesswoman
- John Allis (born 1942), American cyclist
- Harry Allis (1928âÂÂ2006), American football player
- Louis Allis (1916âÂÂ1994), American politician
- Louis Allis (golfer) (1866âÂÂ1950), American golfer
- Mary Allis (1899âÂÂ1987), American dealer of art and antiques
- Oswald Thompson Allis (1880âÂÂ1973), American theologian and academic
- Thomas Allis (1788âÂÂ1875), British osteologist and curator
- Thomas Henry Allis (1817âÂÂ1870), British entomologist
- Victor Allis (born 1965), Dutch computer scientist
- William Allis (1901âÂÂ1999), American physicist