| Colombo Jumbo | Geoff | Ells | 2012 | General |
| Colombo Law Review, The - Vol 1 1969 | A.K. | Mohideen | 1969 | General |
| Colombo Law Review, The - Vol 2, 1971 | P.T.B. | Kohona | 1971 | General |
| Colombo Law Review, The - Vol 3, 1972 | J. K. | Canagarayar | 1972 | General |
| Colombo Law Review, The - Vol 4, 1978 | G.L., Prof | Peiris | 1978 | General |
| Colombo Law Review, The - Vol 5, 1979 | G.L., Prof | Peiris | 1979 | General |
| Colombo Medical School Centenary, The 1870-1970 | Colombo Medical School | N/A | 1970 | General |
| Colombo Museum Guide, Archaeology & Ethnology, Part 1 | N/A | N/A | 1912 | General |
| Colombo Plan, The - Questions & Answers | Colombo Plan Bureau | N/A | N/A | General |
| Colombo Plan, The - Some Political Aspects | L.P. | Singh | 1963 | General |
| Colombo Rides The Tiger | Ministry of State | N/A | 1985 | General |
| Colombo to Badulla by Train | D. P. L. Walter | Silva | 2017 | General |
| Colonel Olcott His Service To Buddhism | B.P. | Kirthisinghe | 1981 | Religion |
| Colonial Economy on Track, The - Roads & Railways in Sri Lanka (1800-1905) | Indrani | Munasinghe | 2002 | General |
| Colonial Kollupitiya & Its Environs | H. M. Mervyn | Herath | 2004 | General |
| Colonial Mixed Blood, A Story of the Burghers of Sri Lanka | Allan Russell | Juriansz | 2013 | General |
| Colonialism in Sri Lanka - Political Economy of the Kandyan Hills | Asoka | Bandarage | 1983 | General |
| Colonization in the Dry Zone of Ceylon | B.H. | Farmer | N/A | General |
| Colosseum, The | Dipti | Saravanamuttu | 2004 | Literature |
| Colour - Sri Lanka | Dominic | Sansoni | 2005 | General |
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