| Inside An Elusive Mind - Prabhakaran | M. R. | Narayan Swamy | 2003 | General |
| Inside Story, The - Some Aspects of My Parliamentary Experience | Hugh | Fernando | 1965 | Politics |
| Insights Into The Sri Lanka Economy 1970-1980 - Logos, Vol 19, No 4, 1980 | Centre For Society & Religion | N/A | 1980 | General |
| Inspirational Gardens of Sri Lankans in Victoria, Australia | Alexander Asoka | Dassanaike | 2011 | General |
| Instability of an Export Economy, The | Gamani | Corea | 1975 | General |
| Institute of Engineers, The - Transactions for 1975 | Institute of Engineers | N/A | 1976 | General |
| Institutes of the Laws of Ceylon - Vol 1 | Henry Byerley | Thomson | 1866 | General |
| Instructions From The Governor-General & Council of India to The Governor of Ceylon | Sophia | Pieters | 1908 | History |
| Insurgency - 1971 | A.C. | Alles | 1976 | General |
| Inter-Racial Equity & National Unity in Sri Lanka | Marga Institute | N/A | N/A | General |
| Interludes | Lucian | De Zilwa | 1963 | General |
| International & Regional Security Implications of the Sri Lankan Tamil Insurgency | Rohan | Gunaratna | 1997 | General |
| International Campaign for the Safeguarding of the Cultural Triangle in Sri Lanka | Ministry of Cultural Affairs | N/A | 1984 | General |
| International Conference on Human Rights Violation Against Tamils in Sri Lanka | World Tamil Youth Federation | N/A | 1984 | General |
| International Human Rights - Some Islamic Perspectives | C.G., Prof | Weeramantry | 1986 | General |
| International Investor Guide To Sri Lanka | Richard. I. | Mann | 1993 | General |
| International Law & Development - Some Asian Perspectives | D., Dr | Wesumperuma | 1980 | General |
| International McCarthyism: The Case of Rhoda Miller De Silva | Judy | Waters Pasqualge | 2008 | General |
| International Terrorism: A QASLU Appeal | QASLU | N/A | N/A | General |
| International Year of Shelter for the Homeless, An - Sri Lanka | N/A | N/A | 1980 | General |
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