| Island of Singing Fish, The, a Colonial Childhood in Ceylon | Tina | Faulk | 2014 | Literature |
| Island Story | J. | Vijayatunga | 1949 | General |
| Islands - Portraits of Miniature Worlds | Louise B. | Young | 1999 | General |
| Isle of Eden - Stories of Ceylon | J.A.R. | Grenier | 1961 | Literature |
| Isle of Eden, Stories of Ceylon | J. A. R. | Grenier | 1961 | Literature |
| Isle of Lanka Ceylon, The | J. | Vijayatunga | 1955 | General |
| Isle of Mystique - Isle of Legend, Glimpsing Eclipsed Sri Lanka | Stefan | D\'Silva | 2016 | General |
| Issues of Truth & Accountability, The Last Stages of the War in Sri Lanka, Narrative | N/A | N/A | 2014 | General |
| It Was The Babblers' Nest | Conrad | Felsinger | 1972 | General |
| It's A Matter of Identity": The Maintenance of Sri Lankan Languages in Melbourne | Nirukshi | Perera | 2011 | General |
| Itinerary of Roads in Ceylon - Part 1 Principal Roads | N/A | N/A | 1915 | General |
| It\'s Not in the Stars | Rizvina Morseth | de Alwis | 2015 | Literature |
| Ivilly Pevilly - The Gastronome's Guide to the Culinary History & Heritage of Sri Lanka | Asiff | Hussein | 2012 | General |
| Ivor Beven, Fieldview and Beyond | Joanne | Russo | 2017 | General |
| J. R. Architect of Modern Sri Lanka - Vol 2 | Walter | Jayewardene | 1985 | Politics |
| J. R. in Cartoons (J.R.Jayewardene Cultural Centre) | N/A | N/A | 2002 | Politics |
| J.R. The People's President | Eamon | Kariyakarawana | 1981 | Politics |
| J.R.Jayewardene Government, The - 1st Two Years, 1977-80, Diary of Events | Ministry of Plan Implementation | N/A | 1981 | Politics |
| J.R.Jayewardene of Sri Lanka | T.D.S.A. | Dissanayaka | 1977 | Politics |
| J.R.Jayewardene of Sri Lanka - A Political Biography, Vol 1 | K.M | de Silva | 1988 | Politics |
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