| Disciplinary Proceedings in Public Corporations in Sri Lanka | T.D. | Sugathapala | 1988 | General |
| Discover Sri Lanka | Ceylon Tours Ltd | N/A | N/A | General |
| Discover Sri Lanka, Vol 10, Issue 3 | N/A | N/A | 2019 | General |
| Discover Sri Lanka, Vol 10, Issue 4 | N/A | N/A | 2019 | General |
| Discovering Ceylon | R.L. | Brohier | 1973 | General |
| Discrimination 1 | Society For Ethnic Amity | N/A | 1985 | General |
| Discrimination 2 | Society For Ethnic Amity | N/A | 1985 | General |
| Diseases of Children & Their Treatment, An Index of the | J.L. | Vanderstraaten | 1901 | General |
| Diseases Of Cultivated Plants | D.V.W. | Abeygunawardena | 1969 | General |
| Diseases of the Coconut Palm, The | H.R. | Briton-Jones | 1940 | General |
| Disintegrating Village, The | Barrie. M | Morrison | 1979 | General |
| Disobedient Girl, A | Ru | Freeman | 2009 | Literature |
| Disorder in Sri Lanka | K. M. M. B. | Kulatunga | 2005 | General |
| Distant Warriors | Channa | Wickremesekera | 2005 | Literature |
| Disuse of the Dutch Language in Ceylon | J.R. | Toussaint | 1942 | History |
| Diverse Inheritance | Yasmine | Gooneratne | 1980 | Literature |
| Diversions of A Diplomat in Ceylon | Philip K. | Crowe | 1957 | General |
| Diversity of Sri Lankan Wildlife, The | Jayantha | Jayewardene | 2008 | General |
| Diversity of the Dumbara Mountains - The Knuckles Massif, with special reference to its herpetofauna, The | Anslem | de Silva | 2005 | General |
| Diversity of the Horton Plains National Park, The | Anslem | De Silva | 2007 | General |
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