| Siva & Buddha | Sister Nivedita | N/A | 1966 | Religion |
| Six Thousand (6,000 ft) Feet Death Dive | Yasmine | Gooneratne | 1981 | Literature |
| Sixth Genre, The: Memory, History & the Tamil Diaspora Imagination (Marga 7/19) | R. | Cheran | 2001 | General |
| Sixty Four Years in Ceylon | Frederick | Lewis | 1923 | General |
| Sixty Years of Ceylon Cricket | S.P. | Foenander | 1924 | General |
| Siyoth - Journal of the Field Ornithology Group of Sri Lanka, Vol 1 | Malaka | Rodrigo | 2006 | General |
| Siyoth - Journal of the Field Ornithology Group of Sri Lanka, Vol 2, No 2, 2007 | Malaka | Rodrigo | 2007 | General |
| Siyoth, Journal of the Field Ornithology Group of Sri Lanka, Vol 2, No 1, 2007 | Malaka | Rodrigo | 2007 | General |
| Sketch of the Constitution of The Kandyan Kingdom, A | John, Sir | D'oyly | 1975 | History |
| Sketches From Ceylon History | H.H., Mrs | Dulling | 1933 | History |
| Sketches in Church History | M. J., Rev. Fr | LeGoc, OMI | 1944 | General |
| Sketches of Ceylon | Eugene, Baron | De Ransonnet | 2001 | General |
| Sketches of Ceylon History | P. | Arunachalam | 1993 | History |
| Sketches of Ceylon History | P. | Arunachalam | 1906 | History |
| Sketches of Ceylon History | Donald | Obeyesekere | 1923 | History |
| Sky-High! | Goolbai | Gunasekara | N/A | Literature |
| Small Farmer Credit - Edanduwawa & Talgamuwa-Attapitiya Divisons | A. Akhtar | Khan | 1974 | General |
| Small Village Tank Systems of Sri Lanka: Their Evolution, Setting, Distribution and Essential Functions | C. R. | Panabokke | 2009 | General |
| Smoked Fish Production | Industrial Development Board of Ceylon | N/A | 1977 | General |
| Smuggler's World - Memoirs of a Customs Officer | G. K. | Rajasuriar | 1991 | General |
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