| Prisoners of the Boer War in Ceylon & Dutch East Indies | R. L. | Brohier | 2015 | General |
| Prisoners of the Japanese | Roger | Bourke | 2006 | General |
| Prisoner\'s Gold, The | Chris | Kuzneski | 2015 | Literature |
| Problem of Nachiketas, The | J. F. | Samaranayake | 1973 | Literature |
| Problems of Ceylon History | G.C. | Mendis | 1967 | History |
| Problems of Public Life In India and Ceylon | T.W. | Roberts | N/A | General |
| Proceedings of the Legislative Council - Ordinary Session | Govt of Ceylon | N/A | 1884 | Politics |
| Prodigal Son & Other Stories, The | B.R. | Blaze | 1965 | Literature |
| Prodromus Faunae Zeylanicae - E.F.Kelaart | Rohan | Pethiyagoda | 1998 | General |
| Prodromus Faunae Zeylanicae: Being Contributions to the Zoology of Ceylon | E.F. | Kelaart | 1852 | General |
| Production and Marketing of Banana in Beminiwatte | M.P. | Perera | 1976 | General |
| Production of Other Crops in Paddy Fields in Yala 1972 | A.S. | Ranatunga | 1974 | General |
| Professional, The | Ashok | Ferrey | 2013 | Literature |
| Profile of Ceylon\'s Catholic Heritage, A | Francis. O, Rev. | Tambimuttu | 1961 | Religion |
| Profiling Sri Lankan Cinema | Wimal | Dissanayake | 2000 | General |
| Profits of War - World-Wide Arms Conspiracy | Ari | Ben-Menashe | 1992 | General |
| Progress - Vol 4, No 1, March 1984 | Ministry of Plan Implementation | N/A | 1984 | General |
| Progress - Vol 4, No 2, June 1984 | Ministry of Plan Implementation | N/A | 1984 | General |
| Progress - Vol 5, No 1, March 1985 | Ministry of Plan Implementation | N/A | 1985 | General |
| Progress - Vol 5, No 3, September 1985 | Ministry of Plan Implementation | N/A | 1985 | General |
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