| Search for Sugala | Lala | Adithiya | 1980 | General |
| Seasonal Cycles - Study of Social Change & Continuity in a Sri Lankan Village, A | Victor C. | De Munck | 1993 | General |
| Second Interim Report of the Special Presidential Commission of Inquiry | Government of Sri Lanka | N/A | 1979 | General |
| Second Report from The Select Committee on Election Law | Govt of Sri Lanka | N/A | 1980 | Politics |
| Second Report of the Ceylon Historical Manuscripts Commission | Govt of Ceylon | N/A | 1935 | General |
| Secret Agendas, Poems | Jean | Arasanayagam | 2012 | Literature |
| Secret Minutes of the Dutch Political Council 1762 | J. H. O. | Paulusz | 1954 | History |
| Seed of Freedom, The - Australia & The Colombo Plan | Osmar | White | N/A | General |
| Seeing Ceylon | R.L. | Brohier | 1981 | General |
| Seeking Jacob | Sharlie | Pickering | 2016 | Literature |
| Seethawaka Urumaya - The Heritage of Seethawaka | Philip | Gunawardena | 2009 | History |
| Segar, Autobiograpy with Paintings | D. Raja | Segar | 2013 | General |
| Select Essays & Verses of J. P. de Fonseka | Leonard | Obris | 1989 | Literature |
| Selected Essays | Maureen | Seneviratne | 2001 | Literature |
| Selected Journalism - H.A.J.Hulugalle (1899 - 1981) | H. A. J. | Hulugalle | 2004 | General |
| Selected Poems | Harrison | Peiris | 1954 | Literature |
| Selected Poems | Eva | Ranaweera | 1987 | Literature |
| Selected Speeches & Articles - Pieter Keuneman (1947 - 1987) | Pieter | Keuneman | 1987 | Politics |
| Selected Speeches & Writings 1944-1978 | J.R | Jayewardene | 1974 | Politics |
| Selected Speeches - Hon R. Premadasa, Prime Minister | Evans | Cooray | 1980 | Politics |
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