| Jungle Tales | Colin | de Silva | N/A | Literature |
| Jungle Tide, The | John | Still | 1999 | General |
| Jungles | Edward S. | Ayensu | 1980 | General |
| Junior Geography For Ceylon Schools, A | A.D. | Baptist | 1946 | General |
| Jurisprudence of Holland, The - Vol 1 | Hugo | Grotius | 1926 | General |
| Jurisprudence of Holland, The - Vol 2 | Hugo | Grotius | 1936 | General |
| Jury System in Ceylon: Its Origins and Incidence | Edward W. | Perera | 1933 | General |
| Just Another Bomb Blast | Sandaruwan Madduma | Bandara | 1999 | Literature |
| Just Another Shade of Brown | Lorna | Wright | 1976 | Literature |
| Just Call Me Dennis, A Retrospective of Hockey in Srti Lanka | Nilanga | Jayawickreme | 2020 | General |
| K.F.E: The Story of Kingswood, Kandy | L.E. | Blaze | 1934 | General |
| Kachchativu: and the Maritime Boundary of Sri Lanka | W. T. | Jayasinghe | 2003 | General |
| Kachcheri Bureaucracy in Sri Lanka: Culture & Politics | Namika | Raby | 1985 | General |
| Kachcheri Manual - Part 1, Finance & Accounts | Min of Public Administration | N/A | N/A | General |
| Kachcheri Manual - Part 2, Food Control | Min of Public Administration | N/A | N/A | General |
| Kakiyan, Th Story of a Crow | Elmo | Jayawardena | 2018 | Literature |
| Kaleidoscope - An Anthology of Sri Lankan English Literature | D. C. R. A. | Goonetilleke | 2007 | Literature |
| Kalidasa | L.C. | van Geyzel | 1961 | Literature |
| Kalutara An Odyssey | Bradman | Weerakoon | 2010 | General |
| Kandula, The Elephant Mascot | N/A | N/A | 2011 | General |
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