Robert Boyle was an Anglo-Irish natural philosopher, chemist, physicist, alchemist and inventor. Boyle is largely regarded today as the first modern chemist, and therefore one of the founders of modern chemistry, and one of the pioneers of modern experimental scientific method. He is best known for Boyle's law, which describes the inversely proportional relationship between the absolute pressure and volume of a gas, if the temperature is kept constant within a closed system. Among his works, The Sceptical Chymist is seen as a cornerstone book in the field of chemistry. He was a devout and pious Anglican and is noted for his writings in theology.

Robert Seymour Bridges was a British poet who was Poet Laureate from 1913 to 1930. A doctor by training, he achieved literary fame only late in life. His poems reflect a deep Christian faith, and he is the author of many well-known hymns. It was through Bridges's efforts that Gerard Manley Hopkins achieved posthumous fame.

Robert Browning was an English poet and playwright whose dramatic monologues put him high among the Victorian poets. He was noted for irony, characterization, dark humour, social commentary, historical settings and challenging vocabulary and syntax.

Robert Burns, also known familiarly as Rabbie Burns, was a Scottish poet and lyricist. He is widely regarded as the national poet of Scotland and is celebrated worldwide. He is the best known of the poets who have written in the Scots language, although much of his writing is in a "light Scots dialect" of English, accessible to an audience beyond Scotland. He also wrote in standard English, and in these writings his political or civil commentary is often at its bluntest.

Robert Burton was an English author and fellow of Oxford University, who wrote the encyclopedic tome The Anatomy of Melancholy.

Robert Charles Dallas was a Jamaican-born British poet and conservative writer. He is known also for a contentious book on Lord Byron, and a history of the Second Maroon War.

Robert Cortes Holliday was an American writer and literary editor.

Dr Robert Craig Maclagan FRSE FRCPE was a Scottish physician, anthropologist and author from the Maclagan family. He was co-founder of the Scottish Association for the Medical Education of Women.

Robert Cushman (1577–1625) was an important leader and organiser of the Mayflower voyage in 1620, serving as Chief Agent in London for the Leiden Separatist contingent from 1617 to 1620 and later for Plymouth Colony until his death in 1625 in England. His historically famous booklet titled 'Cry of a Stone' was written about 1619 and finally published in 1642, many years after his death in 1625. The work is an important pre-sailing Pilgrim account of the Leiden group's religious lives.

Robert Dale Owen was a Scottish-born Welsh-American social reformer who was active in Indiana politics as member of the Democratic Party in the Indiana House of Representatives and represented Indiana in the U.S. House of Representatives (1843–47). As a member of Congress, Owen successfully pushed through the bill that established Smithsonian Institution and served on the Institution's first Board of Regents. Owen also served as a delegate to the Indiana Constitutional Convention in 1850 and was appointed as U.S. chargé d'affaires (1853–58) to Naples.