| Story of The Sinhalese, The, Vol 1 - From Ancient Times to Mahavansa | John M. | Senaveratna | 1930 | History |
| Story of the Sri Lanka Muslims, The | Valentine | Vamadevan | 1999 | General |
| Story of the Sri Lankans, The | Olga, Dr | Mendis | 1998 | History |
| Story of the Stupa, The | A.H. | Longhurst | 1936 | Religion |
| Story of Wattegama, The | C.L. The Rev | Abeynaike | 1947 | General |
| Strands of Serendipity | Neela | Liyanagedera | 1996 | Literature |
| Strange & Thrilling Experiences | Alfred Vincent | Saverimuttu | 1984 | General |
| Strange Tales & Jungle Magic | Trevor | LaBrooy | 2013 | General |
| Stranger In His Land | R.W. | Crossette-Thambiah | N/A | General |
| Stranger Than Fiction, Four Short Stories from Sri Lanka | Nihal | Kodituwakku | 2018 | Literature |
| Strangers on the Camino, A Father, a Son - and a Holy Trail | Sanjiva | Wijesinha | 2014 | Religion |
| Strategy For a Better Society - Speeches of Sirimavo Bandaranaike | N/A | N/A | 1975 | Politics |
| Strike, The and its Aftermath | S. | Nadesan | 1981 | General |
| Student's Guide | Institute of Chartered Accountants of Sri Lanka | N/A | 1981 | General |
| Students' Pali-English Dictionary, A | K.C. | Fernando | 1950 | General |
| Studies & Translations (Philosophical & Religious) | Ponnambalam, Sir | Arunachalam | 1937 | Religion |
| Studies Historical & Cultural | Edmund, Rt. Rev. Dr | Peiris | 1978 | History |
| Studies in Buddhism | W.L.A., Rev Fr | Don Peter | 1996 | Religion |
| Studies in Ceylon Church History | W.L.A., Rev Fr | Don Peter | 1963 | Religion |
| Studies in Christian Education | W.L.A., Rev. Fr | Don Peter | 1974 | Religion |
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