Ubayd Allah
- Abu Zafar Obaidullah
- Abū 'Ubayd 'Abd Allāh al-Bakrī
- Al-Ubaid (disambiguation)
- Azmi Maulana Obaidullah Khan
- Dean Obeidallah
- Finnish Tatars
- Gibadulla Murtasin
- Habibah binte Ubayd-Allah
- Khan of Bukhara
- Obaidullah (Bangladeshi cricketer)
- Obaidullah (Kandahar politician)
- Obaidullah (Pakistani cricketer)
- Obaidullah (detainee)
- Obaidullah Akhund
- Obaidullah Aleem
- Obaidullah Baig
- Obaidullah Hamzah
- Obaidullah Karimi
- Obaidullah Rameen
- Obeid Allah ibn al-Habhab
- Talha ibn Ubayd-Allah
- Ubayd Allah Abu Marwan
- Ubayd Allah al-Mahdi Billah
- Ubayd Allah ibn Umar
- Ubayd-Allah ibn Abd-Allah
- Ubayd-Allah ibn Jahsh
- Ubayd-Allah ibn Ziyad
- Ubaydah ibn al-Harith
- Ubaydul Haq (disambiguation)
- Ubaydullah Khan