| Rain Forests & Cloud Forests | Joan E. | Fisher | 1979 | General |
| Rain Magic | Edith | Weereratne | 1997 | Literature |
| Rainbows in Braille - A Collecion of Short Stories | Elmo | Jayawardena | 2007 | Literature |
| Raj in Ancient Ceylon, The - 1936 - 1940 | Sharada | Nayak | 2015 | General |
| Raja Maha Viharas of Kandy | Lloyd | Weerekoon | 1990 | Religion |
| Raja Singha 2 and His Times | Donald | Obeyesekere | 1928 | History |
| Rajavaliya | A.V. | Suraweera | 2000 | History |
| Rajavaliya, The - A Historical Narrative of Sinhalese Kings | B. | Gunasekara | 1954 | History |
| Ramayana | C. | Rajagopalachari | 1962 | Religion |
| Ramayana, The | Elizabeth | Seeger | 1975 | General |
| Rambles in Ceylon | N/A | De Butts, Lieut | 1841 | General |
| Ramblings of an Old Stager, The | H.C.R. | Anthonisz | 1930 | General |
| Ran Kumari - A Golden Princess of the Kandyan Hills | N.E. | Weerasooria | N/A | Literature |
| Random Ramblings | Gamini De S.G. | Punchihewa | 2008 | General |
| Rangiri Dambulla International Cricket Stadium Souvenir | BCCSL | N/A | 2001 | General |
| Ranjani Taxi Cab Murder Case | A.C. | Alles | 1995 | General |
| Rantambe, the Run Up to the End of the Accelerated Mahaweli Programme | N/A | N/A | N/A | General |
| Rape of Jaffna, The - A Tamil Plea For Justice | R. | Indraraj | 1988 | General |
| RAS Journal - New Series Vol VI, Spl No - Historical Topography of Ancient & Medieval Ceylon | Royal Asiatic Society | Ceylon Branch | 1963 | General |
| RAS Journal - New Series Vol XXXIX - Antonio Boccaro's Ceylon | Royal Asiatic Society | Ceylon Branch | 1995 | General |
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