| Red Turtle Dove (?) at Kitulgala | Tirimanna | Loris | 1996 | XXI | 2 | 48 - 49 | General |
| Red-backed Woodpecker, The | de Zylva | Loris | 1967 | XI | 1 | 33 - 35 | General |
| Red-Faced Malkoha, The | Tirimanna | Loris | 1981 | XV | 6 | 310 - 312 | General |
| Rediscovery of Endemic Brown Blind Swamp Eel, after Twenty Years from Sri Lanka | Goonatilake | Loris | 2000 | 22 | 4 | 42 - 44 | General |
| Rediscovery of Lost Plants in Sri Lanka | Jayasuriya | Loris | 1994 | XX | 3 | 141 - 142 | General |
| Reef Inventory off Wellawatte, A | Claasz | Loris | 1985 | XVII | 1 | 25 - 27 | General |
| Reflections on Agrarian Research in Sri Lanka in the 1970s | Peiris | Ceylon Journal of Historical & Social Studies, The | 1976 | 6 (New Series) | 2 | 48 - 68 | General |
| Reflections on an Economic Policy for Development | Salgado | Ceylon Journal of Historical & Social Studies, The | 1963 | 6 | 1 | 1 - 24 | General |
| Reflections on Forts & Fortresses in Ceylon | Brohier | Journal of the D.B.U. | 1954 | XLIV | 1 | 16 - 21 | General |
| Reflections on Women & Culture: The Sri Lankan Tamil Community in Toronto, Canada | Philips | Polity | Oct-Nov 2003 | 1 | 4 | 7 - 10 | General |
| Reforestation with Pinus - Some Questions & Answers | Gunatilleke | Loris | 1988 | XVIII | 2 | 63 - 68 | General |
| Refugee God: Anthropological Reflections on Sharia & Islamic Conception of the 'Gift" | de Zoysa | Sri Lanka Studies Conference | 1999 | N/A | N/A | 1 - 39 | Religion |
| Regional Conflicts & the Non-Aligned: A South Asian Dimension | Karunadasa | University of Colombo Review | 1988 | 8 | N/A | 75 - 85 | General |
| Regional Folk-lore of Ceylon | Ramalingam | Ceylon Today | 1958 | 7 | 4 | 22 - 27 | General |
| Regional Planning for Colombo | Gunaratna | Ceylon Today | 1961 | 10 | 12 | 7 - 9 | General |
| Registration in the Wrong Folio & Valuable Consideration - Burden of Proof | Ponniah | Colombo Law Review, The | 1978 | 4 | N/A | 109 - 112 | General |
| Reimer's Bibliography | N/A | Journal of the D.B.U. | 2005 | LIV | 1 - 4 | 52 - 54 | General |
| Reland on Malay, Sinhalese & Tamil | Lewis | Journal of the Royal Asiatic Society | 1896 | XIV | 47 | 223 - 236 | General |
| Relics of Dutch Times | D | Journal of the D.B.U. | 1921 | XIII | 1 & 2 | 41 - 42 | History |
| Relics of Dutch Times - 2, Barberyn & Kalutara | Brohier | Journal of the D.B.U. | 1932 | XXII | 1 | 6 - 19 | History |
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