| Speck in the Cosmos, A - Adventurous life of Henry Caulfeild | Colleen | Watts | 2016 | General |
| Spectrum of Buddhism, The | Mahathera | Piyadassi | 1991 | Religion |
| Speech by Hon R. Premadasa at Colombo Municipal Council | N/A | N/A | 1990 | Politics |
| Speech by Hon R. Premadasa at Judicial Service Association | N/A | N/A | 1990 | Politics |
| Speech by Hon R. Premadasa at Kotelawala Defence Academy | N/A | N/A | 1991 | Politics |
| Speech by Hon R.Premadasa at Arthur C. Clarke Award Ceremony | N/A | N/A | 1990 | Politics |
| Speeches Delivered by Hon'ble Mr K.Balasingham | S. | Appadurai | N/A | Politics |
| Spice of Happiness, The - Sri Lanka Cook Book | Harry | Haas | 1983 | General |
| Spice Oil Extraction | Industrial Development Board of Ceylon | N/A | 1977 | General |
| Spinner's Yarn, A | Peter | Philpott | 1990 | General |
| Spinning Wheel & Other Stories, The | Flower | Munasinghe | 1997 | Literature |
| Spinning-Wheel and The Paddy Field, The | S.W.R.D. | Bandaranaike | 1933 | General |
| Spiritual Blossoming | Swami | Shantanand | 1979 | Religion |
| Spit & Polish | Carl | Muller | 1998 | General |
| Splendours of Ruhuna's Heritage | Gamini de S. G | Punchihewa | 2005 | General |
| Spolia Zeylanica - Vol 23, Part 1, 1941 | Colombo Museum | N/A | 1941 | General |
| Spolia Zeylanica - Vol 23, Part 2, 1943 | Colombo Museum | N/A | 1943 | General |
| Spolia Zeylanica - Vol 23, Parts 3 & 4, 1944 | Colombo Museum | N/A | 1944 | General |
| Spolia Zeylanica - Vol 24, Part 1, 1944 | Colombo Museum | N/A | 1944 | General |
| Spolia Zeylanica - Vol 24, Part 2, 1945 | Colombo Museum | N/A | 1945 | General |
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