| Decided Copyright Cases of Sri Lanka | Mahinda | Ralapanawe | 1986 | General |
| Decisions of the Supreme Court on Parliamentary Bills, Vol 2, 1984 - 1986 | Govt of Sri Lanka | Govt of Sri Lanka | 1987 | Politics |
| Decline of Polonnaruwa & The Rise of Dambadeniya, The | Amaradasa | Liyanagamage | 1968 | History |
| Declining Sri Lanka - Terrorism & Ethnic Conflict: the Legacy of J. R. Jayewardene (1906-1996) | Rajiva | Wijesinha | 2007 | General |
| Decorative Sinhalese Art | T.U. | de Silva | 1940 | General |
| Decorative Tiles | C.E. | Godakumbura | 1965 | General |
| Deep Silence, The | Punyakante | Wijenaike | 2009 | Literature |
| Deer in Australia | Deer Advisory Council of Victoria | N/A | 1979 | General |
| Defamation in the Law of South Africa & Ceylon | A.R.B. | Amerasinghe | 1969 | General |
| Dehiwela Flood Outlet, The | Govt of Ceylon | N/A | 1899 | General |
| Deities and Demons Magic and Masks - 1 | Nandadeva | Wijesekera | 1987 | General |
| Deities and Demons Magic and Masks - 2 | Nandadeva | Wijesekera | 1989 | General |
| Delightfully Imperfect - A Year in Sri Lanka at the Galle Face Hotel | Paul | Harris | 2007 | General |
| Democracy Stillborn Lanka\'s Rejection of Equal Rights at Independence ? | Rajan | Hoole | 2022 | General |
| Democratic Political Structure for Sri Lanka, A | Movement For Constituional Reform | N/A | 1995 | Politics |
| Demographic Atlas of Sri Lanka | University of Colombo | N/A | 1980 | General |
| Demography of Ceylon, The | N.K. | Sarkar | 1957 | General |
| Demon Worship & Other Superstitions in Ceylon | N/A | N/A | 2003 (1891) | General |
| Dependant Capitalism in Crisis - The Sri Lankan Economy 1948-1980 | Satchi | Ponnambalam | 1980 | General |
| Deraniyagala, P.E.P. - Commemoration Volume | Thelma T.P. | Gunawardana | 1980 | General |
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