| Udagam Udanaya - International Year of Shelter for the Homeless | Christy | Cooray | 1987 | General |
| Udavattekale | Nihal | Karunaratne | 1986 | General |
| Uduvil Girls School 1911-1936 | N/A | N/A | 1936 | General |
| Umbrella Thief | Sybil | Wettasinghe | 1987 | Literature |
| Ummagga Jataka - (The Story of the Tunnel) | David | Karunaratne | 1962 | Religion |
| UN Human Rights Commission 1987 Statement by Sri Lankan Delegate | Ministry of State | N/A | 1987 | General |
| UN Human Rights Commission, 1988 - Delegates Speech 1988 | Ministry of State | N/A | 1988 | General |
| Unbinding, The | Punyakante | Wijenaike | 2001 | Literature |
| Under The Bo Tree (Caste, Kinship & Marriage in Interior Ceylon) | Nur | Yalman | 1971 | General |
| Understanding the Sinhalese | J.B. | Disanayaka | 1998 | General |
| Underworld of Crime, Drugs and Sex | Kirthie | Abeyesekera | 1991 | General |
| Unfinished Odyssey, The | Rohan | Wijeyaratna | 2018 | General |
| United Nations Annual Review - Sri Lanka 1998 | United Nations | N/A | 1998 | General |
| United Nations Annual Review - Sri Lanka 1999 | United Nations | N/A | 1999 | General |
| Unity & Progress - Prime Minister Premadasa's Speeches in Jaffna | Christy | Cooray | 1981 | Politics |
| Universal Franchise, 1931-1981 - The Sri Lankan Experience | K.M. | de Silva | 1981 | General |
| Universities in Sri Lanka - Handbook for Administrators | W. A | Jayawardana | 1998 | General |
| University of Ceylon Review - Vol XI, No's 3 & 4, 1953 | O.H. | De A.Wijesekera | 1953 | General |
| University of Ceylon Review - Vol XII, No 1, 1954 | O.H. | De A Wijesekera. | 1954 | General |
| University of Ceylon Review - Vol XII, No 3, 1954 | O.H. | De A.Wijesekera | 1954 | General |
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