| Islam in Seilan - Vol 1, No1, 1980 | Muslim Law Research Committee | N/A | 1980 | Religion |
| Islamic Banking - An Alternatye Approach to Finance, Dr A.M.A.Azzes Oration 2014 | A. I. | Marikkar | 2014 | General |
| Island Ceylon | Roloff | Beny | 1980 | General |
| Island Interlude | Esmee | Rankine | 1971 | General |
| Island of a Thousand Mirrors | Nayomi | Munaweera | 2012 | Literature |
| Island of Blood | Anita | Pratap | 2001 | General |
| Island of Light, Buddhism in Sri Lanka. A Concise History & Guide to its Sacred Sites | T. Y. | Lee | 2011 | Religion |
| Island of Singing Fish, The, a Colonial Childhood in Ceylon | Tina | Faulk | 2014 | Literature |
| Island Story | J. | Vijayatunga | 1949 | General |
| Island Story, The | Maureen | Seneviratne | 2000 | History |
| 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 |
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