Roger Williams (1603–1683) was an English theologian, author, and the founder of Rhode Island.

Roger Williams may also refer to:

Arts and entertainment Roger Williams (actor) (1898–1964), American film actor Roger Williams (pianist) (1924–2011), American pianist Roger Williams (organist) (born 1943), British (Welsh) organist and musicologist Roger Ross Williams (born 1962), American television director, producer and writer Roger Williams (playwright) (born 1974), Welsh playwright and screenwriter Roger Williams (born 1979), American musician with Roger Williams and the All Mixed-Up Quartet Roger Williams (author), American science fiction author

Law and politics Roger Williams (Wisconsin politician) (1836–1916), American politician, member of the Wisconsin State Assembly Roger Williams (Georgia politician) (1933–2019), American politician, member of the Georgia House of Representatives Roger Williams (British politician) (born 1948), British politician Roger Williams (Texas politician) (born 1949), American politician, member of the U.S. House of Representatives from Texas

Military Roger Williams (soldier) (1539/40–1595), Welsh soldier of fortune and military theorist Roger D. Williams (1856–1925), American army officer Roger Q. Williams (1894–1976), American army air force pilot and aviation pioneer Roger Garnons Williams (1891–1961), Welsh cricketer and British Army officer

Science and medicine Roger Williams (chemist) (1890–1978), American chemist at Du Pont; Perkin Medal recipient Roger J. Williams (1893–1988), American biochemist Roger Williams (hepatologist) (1931–2020), British liver specialist Roger L. Williams, American structural biologist W. Roger Williams (1854–1948), English pathologist, surgeon, cancer researcher and medical writer

Others Roger Lawrence Williams (1923–2017), American historian Roger Williams (professor), Welsh educationalist Roger Williams (American football) (born 1946), American football player

Other uses Roger Williams Park, Rhode Island, United States Roger Williams University, Rhode Island, United States Roger Williams (train), an innovative DMU train introduced by the New York, New Haven and Hartford Railroad in the United States in the 1960s

See also William Rogers (disambiguation)