| Waterfowl Census of Sri Lanka, The - 1996 | Hoffman | Loris | 1996 | XXI | 2 | 42 - 44 | General |
| Waterfowl Census of Sri Lanka, The - 1999 | Gunawardena | Loris | 1999 | 22 | 2 | 35 - 36 | General |
| Waterways Which Have Made History | N/A | Journal of the D.B.U. | 1955 | XLV | 4 | 107 - 109 | General |
| Wavulpane - Limestone Cave | Perera | Loris | 1970 | XII | 1 | 36 - 38 | General |
| Way to the Cup that Cheers, The - Toddy Tapping | Davidson | Ceylon Observer Pictorial | 1970 | N/A | N/A | N/A | General |
| We Have Our Own Leopard Now - Endemic | Anthonis | Loris | 1997 | XXI | 4 | 151 - 153 | General |
| Weather Forecasting in Ceylon | Jayamaha | Ceylon Today | 1955 | IV | 7 & 8 | 6 - 15 | General |
| Weaver Birds of Sri Lanka, The | Jayewardene | Loris | 1977 | XIV | 3 | 160 - 161 | General |
| Week of Elephant Watching, A | Banks | Loris | 1986 | XVII | 4 | 164 - 166 | General |
| Wesak - A Night of Glory | de Folo | Times of Ceylon Annual | 1964 | N/A | N/A | N/A | Religion |
| Wesak Celebrations in Ceylon | N/A | Ceylon Today | 1961 | 10 | 5 | 9 - 11 | Religion |
| Western Influence on Modern Tamil Poetry | Rajasundaram | Ceylon Today | 1966 | 15 | 11 | 11 - 14 | Literature |
| Western Shrines, The | Keuneman | Tourists' Ceylon | 1968 | 2 | 1 | 44 - 49 | Religion |
| Wetlands | Peiris | Loris | 1994 | XX | 4 | 172 - 173 | General |
| Whale Sharks from the East & West Coasts of Ceylon | Deraniyagala | Spolia Zeylanica | 1955 | 27 | 2 | 241 | General |
| Whales off Trincomalee | Yoo | Loris | 1983 | XVI | 3 | 114 - 115 | General |
| What is a Sanctuary ? | Hoffmann | Loris | 1988 | XVIII | 2 | 70 | General |
| What Leonardus Pietersz, the Shoemaker Did on Christmas Eve, 1849 | L | Journal of the D.B.U. | 1952 | XLII | 1 | 41 - 46 | General |
| What's in a Name | Maartensz | Loris | 1951 | V | 5 | 329 - 332 | General |
| Whats in a Stone? Beauty & Booty | Sourjah | Times of Ceylon Annual | 1974 | N/A | N/A | N/A | General |
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