Waliullah, also spelled Waliyullah, Valiullah, Valiollah (Arabic: ولي الله) is used as a male Muslim name and often a by-name, meaning 'Custodian of God' or 'Friend of Allāh. Most prominently, this is an epithet of Ali ibn Abi Talib, the first Shia Imam and the fourth Rashidun Caliph. Frequent in the Persian influenced Islamic World; It may also refer to:

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