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- Ralph Willis (born 1938), Australian politician
- Ray Willis (born 1982), American footballer
- Raymond E. Willis (1875–1956), US senator from Indiana
- Rex Willis (1924–2000), Welsh rugby union player
- Richard Storrs Willis (1818–1900), American composer
- Richard Willis (spy) (c. 1613-1690), English Civil War spy
- Richard Gardiner Willis (1865–1929), Canadian politician
- Richard Raymond Willis (1876–1968), English Victoria Cross recipient
- Robert Willis (1800–1875), English scientist
- Robert Willis (1800–1875), English academic and writer on church architecture
- Robert Willis, dean of Canterbury since 2001
- Rosemary Willis (born 1953), witness to the assassination of President Kennedy
- Rumer Willis (born 1968), American actress
Read more about this topic: Willis (surname)