| Waterbird Study in Malala Lewaya (Bundala N.P), Sri Lanka | De Silva | Loris | 1999 | 22 | 2 | 45 - 51 | General |
| Waterfalls of Ceylon, The | Borger | Ceylon Today | 1957 | VI | 1 | 1 - 6 | General |
| Waterfowl Census in Ceylon, 1989 - The | Hoffmann | Loris | 1989 | XVIII | 4 | 160 - 164 | General |
| Waterfowl Census in Sri Lanka - 1991 | Hoffmann | Loris | 1991 | XIX | 4 | 147 - 152 | General |
| Waterfowl Census in Sri Lanka, The - 1990 | Hoffmann | Loris | 1990 | XIX | 1 | 38 - 43 | General |
| Waterfowl Census in Sri Lanka, The - 1992 | Hoffmann | Loris | 1993 | XX | 1 | 15 - 18 | General |
| Waterfowl Census in Sri Lanka, The - 1993 | Hoffmann | Loris | 1993 | XX | 2 | 49 - 51 | General |
| Waterfowl Census in Sri Lanka, The - 1998 | Hoffmann | Loris | 1998 | XXI | 5 | 204 - 209 | General |
| Waterfowl Census in Sri Lanka, The - 2000 | Gunawardena | Loris | 2000 | 22 | 4 | 25 - 26 | General |
| Waterfowl Census of Sri Lanka, The - 1994 | Hoffmann | Loris | 1994 | XX | 4 | 180 - 184 | General |
| 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 |
| Waterfowl: Past, Present & Future | | Siyoth | 2007 | 2 | 1 | 62 - 64 | Birds |
| 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 |
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