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- Esther Ralston (1902–1994); silent film actress; born in Bar Harbor
- Edwin Arlington Robinson (1869–1935); poet; born in Alna & raised in Gardiner
- Nelson Rockefeller (1908–1979), businessman, philanthropist, public servant, Vice President of the United States (1974–1977) and Governor of New York (1959–1973); born in Bar Harbor
- Charles Rocket (1949–2005), actor, Saturday Night Live, Tequila and Bonetti, Dumb and Dumber; born in Bangor
- Edith Nourse Rogers, long-serving U.S. congresswoman, born and lived in Saco
- Victoria Rowell (born 1959), actress, The Young and the Restless, Diagnosis: Murder, Dumb and Dumber; born and raised in Portland
Read more about this topic: List Of People From Maine