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- Ralph Lawrence Carr (1887–1950), Governor of Colorado from 1939 to 1943
- Sir Raymond Carr (born 1919), English historian
- Leonard Robert Carr, Baron Carr of Hadley, PC (born 1916), British Conservative politician
- Robert Carr, 1st Earl of Somerset KG, PC (sometimes spelt Kerr; c. 1587–1645), Scottish politician, favorite of King James I
- Robert Carr, 1st Earl of Ancram (c. 1578–1654), 1st Earl of Ancram, was a Scottish nobleman and writer
- Robert Carr (born 1956), American computer programer, credited as the architect of GO Corporation's PenPoint OS
- Roderick Carr (1891–1971), Air Marshal, KBE, CB, DFC, AFC distinguished airman & military leader of New Zealand & India
- Rosamond Carr (née Halsey; 1912–2006), American humanitarian and author
- Roy Carr, English music journalist
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