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

Roger Williams may also refer to:

• 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 (Christian musician) (born 1979), American musician with Roger Williams and the All Mixed-Up Quartet
• Roger Williams (author), American science fiction author

• Roger Williams (Assemblyman) (1836–1916), American politician
• 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

• 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 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

• Roger Lawrence Williams (1923–2017), American historian
• Roger Williams (professor), Welsh educationalist

• 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

• William Rogers (disambiguation)

This disambiguation page lists articles associated with the title Roger Williams.
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