| Serendip to Sri Lanka, Immemorial Isle | Nihal | Fernando | 1991 | General |
| Serendipity | Ashok | Ferrey | 2010 | Literature |
| Serendipity of Wilderness | Harendra | De Silva | 2012 | General |
| Servants - A Cycle | Rajiva | Wijesinha | 1995 | Literature |
| Sesquicentennial Grand Charity Auction Catalogue | N/A | N/A | 2017 | General |
| Sesquicentennial Publication - St Anthony's College, Kandy 1854-2004 | Nishanta | Seneviratne | 2004 | General |
| Settlement Archaelology of the Sigiriya-Dambulla Region, The | Senake | Bandaranayake | 1990 | History |
| Seven Moons of Maali Almeida, The | Shehan | Karunatilaka | 2022 | Literature |
| Seven Years in Ceylon - Stories of Missionary Life | Mary & Margaret | Leitch | 1993 | General |
| Sevens Saga - A History of Seven-A-Side Rugby in Sri Lanka | Neil | Wijeratne | 2000 | General |
| Seventy Five Years (75) at Mount, History of S.Thomas' College, Mt Lavinia 1918-1993 | N.M.P. | Billimoria | 1993 | General |
| Sex Tourism in Asia | Desmond, Rev. Fr | de Sousa | 1993 | General |
| Sexual Exploitation of Children in Sri Lanka, The | Maureen | Seneviratne | 1995 | General |
| Shanthy | Ryle. J. | Moldrich | 2021 | Literature |
| Sharks of Sri Lanka, The | Rex. I | De Silva | 2015 | General |
| Shelter in Sri Lanka 1978-1991 | K.Locana | Gunaratna | 1991 | General |
| Shooting The Floricans | Jean | Arasanayagam | 1993 | Literature |
| Shorebirds - An Artist in the Field | Lester | Perera | 2004 | General |
| Short Account of the History of Irrigation Works up to the 11th Century, A | C.W. | Nicholas | N/A | History |
| Short Biography of Dr N.M Perera, A | E.P. | de Silva | 1975 | General |
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