| Pleasure of Ruins | Roloff | Beny | N/A | General |
| Pleasures of Conquest, The | Yasmine | Gooneratne | 1995 | Literature |
| Pleistocene of Ceylon, The | P.E.P. | Deraniyagala | 1958 | General |
| Plight of Hindus in Sri Lanka | PROTEG | N/A | 1986 | General |
| Plural Identities & Political Choices of the Muslim Community (Marga 9/19) | Ali | Ameer | 2001 | General |
| Plurality, Passion and Power | World Council of Churches | N/A | 1990 | General |
| Poblems of Democracy, Constitutionalism & Political Violence | Ulrich | Everding | 1993 | General |
| Pocket Time Table, 1978 - Ceylon Government Railway | N/A | N/A | 1978 | General |
| Poems | Anne | Ranasinghe | 1971 | General |
| Poems | Anusha | Wijeyaratne | 1978 | Literature |
| Poems from The Sanskrit | John | Brough | 1968 | Literature |
| Poems of Destry Muller, The (presented by his father, Carl Muller) | Destry | Muller | 2005 | Literature |
| Poems of Hector d\' Alwis | Hector | d\'Alwis | N/A | Literature |
| Poems of Sri Lanka | Eustace | Gunawardena | 1973 | Literature |
| Poems Through the Years | Trevor | LaBrooy | 1986 | Literature |
| Poems to the Creater | Shelagh | Goonewardene | 2008 | Literature |
| Poet Tambimuttu - A Profile | P., Kalakeerthi Professor | Poologasingham | 1993 | General |
| Poetry From the Sinhalese | George | Keyt | 1938 | General |
| Police Role in Sri Lanka | Frank | de Silva | 2015 | General |
| Policeman Remembers, A | Herbert | Jayasuriya | 1999 | General |
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