| Malalasekera Commemmoration Volume | O.H. | De A.Wijesekera | 1976 | General |
| Malaria in Ceylon - A Pamphlet For Teachers | Lucius | Nicholls | 1920 | General |
| Malay Centenary Book - Cricket Club & All Ceylon Malay Association - Souvenir | D.D. | Saldin | 1972 | General |
| Malayan Symaster - Memoirs of a Rubber Planter, Bandit Fighter & Spy | Boris | Hembry | 2011 | General |
| Maldive Islands, The - Monograph on the History, Archaelogy and Epigraphy | H. C. P. | Bell | 2002 - Reprint | General |
| Maldive Mystery, The | Thor | Heyerdahl | 1986 | General |
| Mammals of Sri Lanka, The | Asoka | Yapa | 2013 | General |
| Man in Buddhism & Christianity | Bryan, Dr | De Kretser | 1998 | Religion |
| Man in His Time, A, The Jetwing Story and the life of Herbert Cooray | Shiromal | Cooray | 2018 | General |
| Man of the Masses - R. Premadasa, A Biography | Wimal | Abhayasundara | 1979 | Politics |
| Man-Eating Leopard of Punanai, Sri Lanka, The | Douglas B | Ranasinghe | 2009 | General |
| Management Techniques in the Tea Plantation Industry - Seminar Papers | Institute of Chartered Accountans of Ceylon | N/A | 1971 | General |
| Managing Ethnic Tensions in Multi-Ethnic Societies, Sri Lanka 1880-1985 | K.M. | de Silva | 1986 | General |
| Maname & Other Stories | A.M.G. | Sirimane | 1977 | Literature |
| Mandalarama (Vattarama) & Alokalena (Alulena) | G. R. | Gunawardana Banda | 2017 | Religion |
| Mangroves of Sri Lanka | Leonard | Pinto | 1986 | General |
| Mannar Unbound | Thilak | Jayaratne | 2018 | General |
| Mannar, Sri Lnka | Sarala | Fernando | 2017 | General |
| Mannar, A Monograph | W. J. S. | Boake | 1888 | General |
| Manners, Customs & Ceremonies of Sri Lanka | Miniwan P. | Tillakaratne | 1986 | General |
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