| Your Guide To Sri Lanka | N/A | N/A | N/A | General |
| Your Tea From Ceylon | Tea Propaganda Board | N/A | 1956 | General |
| Youth, Land and Employent | Marga Institute | N/A | 1974 | General |
| Zeylanica - A Study of the People's & Languages of Sri Lanka | Asiff | Hussein | 2009 | General |
| Zeylanica, Vol 6, No 1, May 2001 | Rohan | Pethiyagoda | 2001 | General |
| Zeylanica, Vol 6, No 2, May 2001 | Rohan | Pethiyagoda | 2001 | General |
| Zillij | Amenna | Hussein | 2003 | Literature |
| Zoo Search in Ceylon | Heinz | Randow | 1958 | General |
| Zoological Guide to the Zoological Gardens of Ceylon | Aubrey N, Major | Weinman | 1957 | General |
| Zoological Guide to the Zoological Gardens of Ceylon (Dehiwela Zoo) | Aubrey N., Major | Weinman | 1961 | General |
| \"Claws\" The Jaguar | Harsha Ruwan | Wasalathanthri | 1999 | Literature |
| \"We Must Have a Navy\", The Navy in Sri Lanka, 1937-1972 | Somasiri | Devendra | 2015 | General |
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