| Unterrichtswissenschaft | | 0340-4099 |
| UPB Scientific Bulletin, Series C: Electrical Engineering | UPB SCIENTIFIC BULLETIN, SERIES C: ELECTRICAL ENGINEERING | 1454-234X |
| UPB Scientific Bulletin, Series D: Mechanical Engineering | UPB SCIENTIFIC BULLETIN, SERIES D: MECHANICAL ENGINEERING | 1454-2358 |
| Update in Anaesthesia | UPDATE IN ANAESTHESIA | 1353-4882 |
| Updates in Surgery | UPDATES IN SURGERY | 2038-131X |
| Uppeldi Og Menntun | | 1022-4629 |
| Upravlenets-The Manager | UPRAVLENETS-THE MANAGER | 2218-5003 |
| Upsala Journal of Medical Sciences | UPSALA J MED SCI | 0300-9734 |
| Ur Journal of Humanities and Social Sciences | UR JOURNAL OF HUMANITIES AND SOCIAL SCIENCES | 2543-8379 |
| Ural Mathematical Journal | URAL MATHEMATICAL JOURNAL | 2414-3952 |
| Ural'skij Istoriceskij Vestnik | URAL'SKIJ ISTORICESKIJ VESTNIK | 1728-9718 |
| Ural-Altaic Studies | URAL-ALTAIC STUDIES | 2079-1003 |
| Urban Affairs Review | URBAN AFF REV | 1078-0874 |
| Urban Anthropology and Studies of Cultural Systems and World Economic Development | | 0894-6019 |
| Urban Climate | URBAN CLIMATE | 2212-0955 |
| Urban Design International | URBAN DESIGN INTERNATIONAL | 1357-5317 |
| Urban Development Issues | URBAN DEVELOPMENT ISSUES | 2544-624X |
| Urban Ecosystems | URBAN ECOSYSTEMS | 1083-8155 |
| Urban Education | URBAN EDUC | 0042-0859 |
| Urban Education | | 0143-9154 |
| Urban Forestry and Urban Greening | URBAN FOR URBAN GREE | 1618-8667 |
| Urban Forum | URBAN FORUM | 1015-3802 |
| Urban Geography | URBAN GEOGR | 0272-3638 |
| Urban History | | 0963-9268 |
| Urban History Review/Revue d'Histoire Urbaine | URBAN HISTORY REVIEW-REVUE D HISTOIRE URBAINE | 0703-0428 |
| Urban Lawyer | URBAN LAWYER | 0042-0905 |
| Urban Morphology | URBAN MORPHOLOGY | 1027-4278 |
| Urban Planning | URBAN PLANNING | 2183-7635 |
| Urban Policy and Research | URBAN POLICY RES | 0811-1146 |
| Urban Rail Transit | URBAN RAIL TRANSIT | 2199-6687 |
| Urban Research & Practice | URBAN RESEARCH & PRACTICE | 1753-5069 |
| Urban Studies | URBAN STUD | 0042-0980 |
| Urban Water Journal | URBAN WATER J | 1573-062X |
| Urbani Izziv-Urban Challenge | URBANI IZZIV-URBAN CHALLENGE | 0353-6483 |
| Urbanism. Architecture. Constructions | URBANISM. ARCHITECTURE. CONSTRUCTIONS | 2069-0509 |
| Urbanistyka. MiĘdzyuczelniane Zeszyty Naukowe | | 1426-7446 |
| Urbanities-Journal of Urban Ethnography | URBANITIES-JOURNAL OF URBAN ETHNOGRAPHY | 2239-5725 |
| Urbano | URBANO | 0717-3997 |
| Urbe-Revista Brasileira de Gestao Urbana | URBE-REVISTA BRASILEIRA DE GESTAO URBANA | 2175-3369 |
| Urdimento-Revista de Estudos em Artes Cenicas | URDIMENTO-REVISTA DE ESTUDOS EM ARTES CENICAS | 1414-5731 |
| URISA Journal | URISA JOURNAL | 1045-8077 |
| Urogynaecologia International Journal | UROGYNAECOLOGIA INTERNATIONAL JOURNAL | 1121-3086 |
| Urolithiasis | UROLITHIASIS | 2194-7228 |
| Urologe - Ausgabe A | UROLOGE | 1433-0563 |
| Urologe - Ausgabe A | UROLOGE | 0340-2592 |
| Urologia Colombiana | UROLOGIA COLOMBIANA | 0120-789X |
| Urologia Internationalis | UROL INT | 0042-1138 |
| Urologia Journal | UROLOGIA JOURNAL | 0391-5603 |
| Urologia Polska | | |
| Urologic Clinics of North America | UROL CLIN N AM | 0094-0143 |
