R.
Look up r. in Wiktionary, the free dictionary.
R. or r. may refer to:
- Reign, the period of time during which an Emperor, king, queen, etc., is ruler
 - Rex, abbreviated as R., the Latin word meaning King
 - Regina, abbreviated as R., the Latin word meaning Queen
 - Regnavit or rexit, abbreviated as r., used in historiography to designate the ruling period of a person in dynastic power, to distinguish from his or her lifespan (e.g. "Charles V (r. 1519–1556)")
 - Abbreviation R., meaning Rex or Regina. Commonly used for criminal prosecution in Commonwealth realms where offences are brought in the name of the monarch (e.g. "R. v Defendant")
 - R., an album by American singer R. Kelly
 
See also
Search for "R."  on Wikipedia.
- R (disambiguation)
 - All pages with titles beginning with R.
 - All pages with titles containing R.
 - R, eighteenth letter of the English and Latin alphabets