| Rich List - The Most Successful Business People & Investors in Sri Lanka | N/A | N/A | 2007 | General |
| Richard de Zoysa - his life, some work,....a death | Rajiva | Wijesinha | 2000 | General |
| Richmond College, Galle Centenary Issue 1876-1976 | Richmond College | N/A | 1976 | General |
| Richmond Mahinda 71st Cricket Encounter - Souvenir | Ranjan | Dias Jayasinha | 1976 | General |
| Ridi Vihare - The Flowering of Kandyan Art | Sinharaja, Dr | Tammita - Delgoda | 2006 | General |
| Riding the Zeitgeist, The Hemaka Amarasuriya Story | Savithri | Rodrigo | 2018 | General |
| Riding the Zeitgeist, The Hemal Amarasuriya Story | Savithri | Rodrigo | 2018 | History |
| Ridma Rekha, A Collection of Deco-Motifs Based on Traditional Style | Jayasiri | Semage | 1996 | General |
| Rienzie Wijetilleke Revisited, A Selection of Interviews, Speeches & Writings | Savithri | Rodrigo | 2020 | General |
| Rifle & the Hound in Ceylon, The | Samuel | Baker | 1970 | General |
| Right Royal Rugby Jokes | N/A | N/A | 1999 | General |
| Right to Vote & the Law Relating to Election Petitions, The | de Alwis | Sundari | 2000 | Politics |
| Righteous Thoughts & Aspirations - Selected Speeches of Hon R.Premadasa | N/A | N/A | 1982 | Politics |
| Riots & Martial Law in Ceylon, 1915 | P. | Ramanathan | 1916 | General |
| Ripples on a Lake | Elieen | de Silva | 2002 | Literature |
| Rise | Rashika | Perera Gomez | 2019 | Literature |
| Rise & Fall of the LTTE, The | Mahinda, Dr | Balasuriya | 2010 | General |
| Rise & Fall of the Tamil Tiger Terrorists, The | Damian | Tangram | 2018 | General |
| Rise of Modern Asia, The | Ian | Thomson | 1957 | General |
| Rise of the Labor Movement in Ceylon, The | Kumari | Jayawardena | 1972 | Politics |
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