| Assassination of a Prime Minister - Bandarnaike Murder Case | Lucian G. | Weeramantry | 1969 | Politics |
| Assassination of Rajiv Gandhi, The - Unanswered Questions & Unasked Queries | Subramanian, Dr | Swamy | 2000 | General |
| Assessing Performance of Decentralization in Sri Lanka | Ramanie | Samaratunga | 2001 | General |
| Assessment of the Economic Value of Muthurajawela Wetland - IUCN | Lucy | Emerton | 2003 | General |
| Assessment of the Status of Biodiversity in the Maduganga Mangrove Estuary, An - IUCN | C. N. B. | Bambaradeniya | 2002 | General |
| Assessment of the Status of Biodiversity in the Muthurajawela Wetland Sanctuary, IUCN | C. N. B. | Bambaradeniya | 2002 | General |
| Assignment Ceylon | Edward S. | Aarons | 1974 | Literature |
| Assignment Colombo | J.N. | Dixit | 1998 | General |
| Assignment Jaffna | S.C., Lt-Gen | Sardeshpande | 1992 | General |
| Assignment Peace in the Name of the Motherland, Vol 2 - The Battle for the Wanni 1996-1999 & other Battles of Eelam War 3 | L. M. H. | Mendis | 2002 | General |
| Assignment Peace in the Name of the Motherland, Vol 3 - Eelam War 1, IPKF Operations & Eelam War 2 | L. M. H. | Mendis | 2004 | General |
| Astrapani - A Romance of Sigiriya | W.T. | Keble | N/A | Literature |
| Astrology, A Pernicious Doctrine | Ben | Jayawardene | 1938 | General |
| Asylum | Channa | Wickremesekera | 2014 | Literature |
| Asymmetric Warfare in Sri Lanka, The Case of Sri Lanka | Jayanath | Colombage | 2015 | General |
| At My Father's Feet | D. B. | Kuruppu | 2001 | Literature |
| At the Cutting Edge - Essays in Honour of Kumari Jayawardena | Neloufer | de Mel | 2007 | General |
| At the Water\'s Edge | Pradeep | Jeganathan | 2004 | Literature |
| Atapattu Walawwa - Residence of the Gooneratne & Dias Abeyesinghe Families of Galle | Janaka | Goonetilleke | 2012 | General |
| Atlas, Vertebrates From Ceylon - Fishes - 1 | P.E.P. | Deraniyagala | 1952 | General |
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