| Pen Portraits Ninety Three Eminent Disciples of The Buddha | C. | De Saram | 1966 | Religion |
| Penguin Book of Hell, The | Scott. G. | Bruce | N/A | Religion |
| Penguin New Writing in Sri Lanka, The | D.C.R.A. | Goonetilleke | 1992 | Literature |
| People Inbetween - Vol 1, The Burghers & The Middle Class in the Transformation Within Sri Lanka, 1790s-1960s | Michael | Roberts | 1989 | General |
| People of Asia, The | Gordon. T | Bowles | 1977 | General |
| People of Ceylon, The | N.D., Dr | Wijesekera | 1987 | General |
| People of Sri Lanka, The | N/A | N/A | 2017 | General |
| People Sri Lanka | Tom | Tidball | 2008 | General |
| People's Movement Under Siege, A | Jehan | Perera | 1992 | General |
| People's Partcipation in Water Management , Gal Oya, Sri Lanka | Norman | Uphoff | 1985 | General |
| People's Rights, The - Documents of the Civil Rights Movement of Sri Lanka 1971-78 | Kumari | Jayawardena | 1979 | General |
| Peoples of South Asia | Clarence | Maloney | 1974 | General |
| Peradeniya - Memories of a University | K.M. | de Silva | 1997 | General |
| Perceptions | Peter | Seneviratna | 209 | Literature |
| Performance - January-June 1984 | Ministry of Plan Implementation | N/A | 1984 | General |
| Performance - January-March 1984 | Ministry of Plan Implementation | N/A | 1984 | General |
| Performance - January-September 1984 | Ministry of Plan Implementation | N/A | 1984 | General |
| Perfumed Dusk, The | Ronald | Abhayaratna | 1954 | Literature |
| Period of Eight Kings, The - Portuguese Wars | P. B. | Rambukwelle | 1996 | History |
| Perpetual Movement, Popular Revolts in Sri Lanka in the 18th & 19th Centuries | Kumari | Jayawardena | 2011 | General |
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