| Dictionary of Biography of the Tamils of Ceylon | S. | Arumugam | 1996 | General |
| Dictionary of Proverbs of the Sinhalese | John M. | Senaveratna | 1936 | General |
| Dictionary of Sri Lankan English, A | Michael | Meyler | 2007 | General |
| Dictionary of Tamil & English, A | Johann Philip | Fabricius | 1910 | General |
| Dictionary of the Sinhalese Language, A - Vol 1, Part 1 | D.B., Sir | Jayatilaka | 1935 | General |
| Dictionary of the Sinhalese Language, A - Vol 1, Part 2 | D.B., Sir | Jayatilaka | 1936 | General |
| Dictionary of the Sinhalese Language, A - Vol 1, Part 4 | D.B., Sir | Jayatilaka | 1939 | General |
| Dictionary of the Sinhalese Language, A - Vol 1, Part 5 | D.B., Sir | Jayatilaka | 1940 | General |
| Dictionary of the Sinhalese Language, A - Vol 1, Part 6 | D.B., Sir | Jayatilaka | 1941 | General |
| Dictionary, English & Sanskrit, A | Monier | Williams | 1971 | General |
| Diesel - Electric Locomotives - M1 Loco | N/A | N/A | 1958 | General |
| Diesel Rail Traction in Ceylon | H.W.F. | Freer | 1939 | General |
| Dietetics | Ananda | Namalasuria | 1948 | General |
| Different Kind of Madness, A | Pauline | Schokman | 2019 | Literature |
| Digest of Ceylon Cases, A - 1965 - 1968 | V.S. | Sivagurunathan | 1968 | General |
| Digest of the Civil Law of Ceylon, A - Vol 1 | P. | Arunachalam | 1910 | General |
| Digging Intothe Past - Essays of Antiquity | Raja | de Silva | 2005 | General |
| Digging Up the Family - A Guide to Genealogy & How to Find Where You have Come From in any Country | Kyle J. | Joustra | 2012 | General |
| Dilemma of an Island | Merril | Gunaratne | 2001 | General |
| Dilemma of Sri Lanka,The | T.D.S.A. | Dissanayaka | N/A | General |
|
|
