| My Life in Words | Joe | Sethupathy | 2021 | General |
| My Memoirs of The Plantations of Ceylon | Sepala | Ilangakoon | 2003 | General |
| My Mother's Life | Ursula | Arumapperuma | 1984 | General |
| My Personal Ark | Aubrey, Major | Weinman | 1968 | General |
| My Recent Visit To India - Statement by L. Athulathmudali | Ministry of State | N/A | 1984 | General |
| My Rights, Part 1, 5-6 years | P.E.A.C.E | N/A | N/A | General |
| My Rights, Part 2, 9-12 Years | P.E.A.C.E | N/A | N/A | General |
| My Rights, Part 3, 13-18 Years | P.E.A.C.E | N/A | N/A | General |
| My Son Lia & Other Stories | Rosalind | Mendis | N/A | Literature |
| My Trek to the Heart | A. T. S | Paul | 2002 | General |
| Mynah at the Zoo & Other Essays | J. | Vijayatunga | 1947 | Literature |
| Mysterious Adventures of the Little Boy | S. | Kuruppuarachchi | N/A | Literature |
| Mystique of Sigiriya, The - Whispers of the Mirror Wall | W. J. M. | Lokubandara | 2007 | History |
| Myth of Forced Conversions, The - Portuguese Missionary Methods | S.G., Rev. Fr | Perera | 1956 | Religion |
| Myths of the Hindus & Buddhists | Ananda K. | Coomaraswamy | 1967 | Religion |
| N.M. - A Short Biography | E.P. | de Silva | 1975 | Politics |
| Naama Rupa | Palitha | Manchanayake | 2018 | Religion |
| Nadagama - The First Sri Lankan Theatre | M.H., Dr | Goonatilleka | 1984 | General |
| Names & Numbers, Stories | Chiranthi | Rajapakse | 2017 | Literature |
| Nandhimitta | Rosalnd | Mendis | 1952 | Literature |
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