- Upanishads. Kālāgnirudropaniṣad1
- Upanishads. Muṇḍakopaniṣad4
- Upanishads. Māṇḍūkyopaniṣad1
- Upanishads. Praśnopaniṣad3
- Upanishads. Taittirīyopaniṣad5
- Upanishads. Īśopaniṣad3
- Upanishads. Śvetāśvataropaniṣad2
- Urban VII, Pope, 1521-15901
- Urdu language1
- Urdu language--Grammar1
- Urdu literature1
- Urdu poetry5
- Urine--Analysis3
- Urjūzah al-Raḥbīyah (Ibn al-Mutafanninah, Muḥammad ibn ʻAlī)5
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- Urmawī, Sirāj al-Dīn Maḥmūd ibn Abī Bakr, 1198-12831
- Urmawī, Sirāj al-Dīn Maḥmūd ibn Abī Bakr, 1198-1283. Maṭāliʻ al-anwār17
- Urology1
- Urraca, Infanta de Zamora, 1033?-11011
- Ustarūshanī, Muḥammad ibn Maḥmūd, -1234 or 1235. Fuṣūl2