R
- George Read (1733–1798), U.S. Senator from Delaware and Chief Justice of Delaware
- Judge Reinhold (born 1957), actor; born in Wilmington
- Eugene Reybold (1884–1961), Chief of Engineers (Army Corps of Engineers)during World War II
- Robert J. Reynolds (1838–1909), General Assembly and Governor of Delaware
- Harry A. Richardson (1853–1928), businessman and U.S. Senator from Delaware
- George R. Riddle (1817–1867), U.S. Representative and U.S. Senator from Delaware
- Henry M. Ridgely (1779–1847), U.S. Representative and U.S. Senator from Delaware
- Robert P. Robinson (1869–1939), banker and Governor of Delaware
- Thomas Robinson, Jr. (1800–1843), lawyet and U.S. Representative from Delaware
- Caesar Rodney (1728–1784), Continental Congressman and President of Delaware
- Caesar A. Rodney (1772–1824), U.S. Senator from Delaware and U.S. Attorney General
- Caleb Rodney (1767–1840), General Assembly and Governor of Delaware.
- Daniel Rodney (1764–1846), Governor and U.S. Senator from Delaware
- George B. Rodney (1803–1883), lawyer and U.S. Representative from Delaware
- Thomas Rodney (1744–1811),General Assembly and Continental Congressman from Delaware
- Daniel Rogers (1754–1806), General Assembly and Governor of Delaware
- John W. Rollins (1916–2000), businessman and Lieutenant Governor of Delaware.
- David Roselle (born 1939), mathematician and academic administrator
- William H. H. Ross (1814–1887), farmer and Governor of Delaware
- William V. Roth, Jr. (1923–2003), U.S. Representative, U.S. Senator from Delaware, and namesake of the Roth IRA and the Roth 401(k) retirement savings plans.
- Cynthia Rothrock (born March 8, 1957), American martial artist
Read more about this topic: List Of People From Delaware