| Collected Works - Vol 1- A.T. Ariyaratne | A.T. | Ariyaratne | N/A | General |
| Collected Works - Vol 2 - A.T.Ariyaratne | A.T. | Ariyaratne | 1980 | General |
| Collected Works - Vol 3 - A.T.Ariyaratne | A.T. | Ariyaratne | 1985 | General |
| Collected Works - Vol 4 - A.T.Ariyaratne | A.T. | Ariyaratne | 1989 | General |
| Collected Works of Mahatma Gandhi - Vol 35 | N/A | N/A | 1969 | General |
| Collection of Cartoons by Wijesoma, A | W.R. | Wijesoma | 1985 | General |
| Collection of Speeches on Housing Development - Hon. R. Premadasa | Min of Local Government | N/A | 1987 | Politics |
| Collections & Recollections | Decima | Perera | 2003 | Literature |
| Collective Identities Nationalisms & Protest in Modern Sri Lanka | Michael | Roberts | 1979 | General |
| Collective Violence and Everyday Practice in Sri Lanka | Jonathan | Spencer | 1993 | General |
| Colloquial Sinhalese Through Easy Way | D.R. | Wijegoonewardane | 1951 | General |
| Colloquial Tamil - As Understood by Labourers on Tea & Rubber Estates | W.G.B. | Wells | 1941 | General |
| Colombo | L.E. | Blaze | 1926 | General |
| Colombo | Carl | Muller | 1995 | General |
| Colombo Museum Centenary Souvenir 1877-1977 | P.H.D.H. | de Silva | 1977 | General |
| Colombo - A Critical Introspection | Wimarshana | Wijesuriya | 2012 | General |
| Colombo - The Hub Port of South Asia | Sri Lanka Ports Authority | N/A | N/A | General |
| Colombo Chetty Community, The | A.T.S. | Paul | 2001 | General |
| Colombo City Guide | Juliet | Coombe | 2011 | General |
| Colombo Club, The - First Hundred Years 1871-1971 | Colombo Club, The | N/A | 1971 | General |
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