| Return To Enchantment | Nalini | de Sielvie | 1988 | Literature |
| Return to Kandy, A | Vesak | Nanayakkara | 1971 | General |
| Return to Rhyme A and Other Lines | Carl | Muller | 2009 | Literature |
| Return To Righteousness - Anagarika Dharmapala, Speeches & Writings | Ananda | Guruge | 1965 | Religion |
| Return to Sri Lanka, Travels in a Paradoxical Island | Razeen | Sally | 2019 | General |
| Rev. Fr Thomas (1886-1964) - A Symposium | N/A | N/A | 1974 | Religion |
| Rev. James Cordiner, The (A Brief Sketch of His Life) | J.R. | Toussaint | 1936 | General |
| Revenue & Export of the Colombo Harbour from 1895-1904 | Govt of Ceylon | N/A | 1905 | General |
| Review of Advocate Perera's Flag Book, A | Walter | De Soysa | 1921 | History |
| Review of Government Activities 1972, A | Minister of Finance | N/A | 1972 | Politics |
| Review of the Fertilizer Year 1983 | National Fertilizer Secretarit | N/A | 1983 | General |
| Review of the Southern Border of Sinharaja, A | F. Halsa A. | Hudha | 2018 | General |
| Revolt in The Temple, The | N/A | N/A | 1953 | Religion |
| Revolution & Evolution | Martin | Wickramasinghe | 1971 | Religion |
| Revolution Under The Breadfruit Tree - The Story of Sarvodaya | Gunadasa | Liyanage | 1988 | General |
| Revolutionary Idealism and Parliamentary Politics | Y.Ranjith | Amarasinghe | 2000 | Politics |
| Rhymes of Our Times | Dr Riley | Fernando | N/A | Literature |
| Rhythm of Cascades - 10 Waterfalls, A Photographic Window of Selected Waterfalls in Sri Lanka | M.S.N. L. | De Costa | 2007 | General |
| Riberio's History of Ceilao | P.E. | Pieris | 1909 | History |
| Rice & Rubber - The Story Of China-Ceylon Trade | S.P. | Amarasingam | N/A | General |
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