| Welfarism & Politics in Sri Lanka | Laksiri, Prof | Jayasuriya | 2000 | Politics |
| Well, Mudaliyar & Other Plays | H.C.N. | de Lanerolle | 1954 | General |
| Wesak Blossoms | Charita | Ranasinha | 1949 | Literature |
| Wesak Mal | Sujatha | Hettiarachchi | 1964 | Literature |
| Wesley College, Colombo, 125 Years - Commemorative Souvenir, 1874 - 1999 | Shelton | Peiris | 1999 | General |
| Wesley College, Colombo, Centenary Souvenir, 1874 - 1974 | Shelton | Peiris | 1974 | General |
| Wesley College, Colombo, Diamond Jubilee Number, 1874 - 1949 | Archibald | Singham | 1949 | General |
| West Indies Cricket Tour of Sri Lanka 1975 - Souvenir | Board of Control For Cricket in Sri Lanka | N/A | 1975 | General |
| West Reappraised, The | A.M.A. | Azeez | 1964 | General |
| Wetland Conservation in Sri Lanka - National Symposium Proceedings - IUCN | N/A | N/A | 2003 | General |
| Wetland Site Report - Bellanwilla-Atidiya Marsh | Central Environment Authority | N/A | 1993 | General |
| Wetland Site Report - Walauwawatta Waturana Swamp Forest | Central Environment Authority | N/A | 1994 | General |
| Whales & Dolphins, Sri Lanka | Anouk | Ilangakoon | 2002 | General |
| What Anglo-Catholics Stand For - Five Lectures | N/A | N/A | 1927 | Religion |
| What I Think | J. | Vijayatunga | 1948 | General |
| What Is Buddhism | P.Lakshmi, Prof | Narasu | 1964 | Religion |
| What Is Catholic Action ? | Christian | John | N/A | Religion |
| What Is The Position of the Church of England | Chrtistopher.E., Rev Fr | Bonjean | 1926 | Religion |
| What People Think About the Ethnic Conflict | N/A | N/A | 2000 | General |
| What Tree is That? A Lay-Persons Guide to Some Trees of Sri Lanka | Sriyanie | Miththapala | 1998 | General |
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