| Lusitanian Links With Lanka | W.L.A., Rev Fr | Don Peter | 1997 | History |
| Lyrebird\'s Cry, The | Samantha | Sirimanne Hyde | 2022 | Literature |
| Lyrics of Lanka | Swarnakanthi | Rajapakse | 2008 | Literature |
| M.H.Mohamed A Life Sketch | A.C.M. | Saly | 1996 | General |
| Macroeconomic Policies, Crises and Growth in Sri Lanka, 1969-1990 | Premachandra | Athukorala | 1994 | General |
| Madam Premier | D.B. | Danapala | 1960 | Politics |
| Madam Prime Minister - Sirimavo Bandaranaike | K.P. | Mukerji | 1960 | Politics |
| Madame Sir" - Career & Dilemmas of the First Womaqn Diplomat in the Sri Lanka Foreign Service | Manel | Abeysekera | 2010 | General |
| Madavela, Ancient Temple | N/A | N/A | 2014 | Religion |
| Madhu | N/A | N/A | 1976 | Religion |
| Madol Doova - As Translated by Ashely Halpe | Martin | Wickramasinghe | 1976 | Literature |
| Madras - Its Past & Its Present | S. | Muthiah | 2011 | General |
| Madras Miscellany, A - A Decade of People, Place & Potpourri | S. | Muthiah | 2011 | General |
| Madras Rediscovered | S. | Muthiah | 2008 | General |
| Magic of Sri Lanka, The | Gehan | de Silva Wijeyeratne | 2005 | General |
| Magic of Sri Lanka, The | Gehan | De Silva Wijeyeratne | 2006 | General |
| Magical Times in Ceylon / Sri Lanka | Nihal | Kodituwakku | 2012 | General |
| Maha Bodhi Tree in Anuradhapura | H.S.S. | Nissanka | 1994 | Religion |
| Maha Danamuttha Stories & Andare Stories | Amara | Wijeratne | 1974 | Literature |
| Maha Pirit Pota - The Great Book of Protections | Lionel | Lokuliyana | N/A | Religion |
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