Abu Al-Hasan (Arabic: أبو الحسن, romanized: Abū Al-Ḥasan, lit. 'Father of Hasan'), also transliterated Abu'l Hasan, is an Arabic kunya ('teknonym'). It may refer to:

• Ali ibn Abi Talib (600–661), the fourth caliph of the Rashidun Caliphate
• Ali ibn Musa (766–818), the eight imam in Ithna Ashariyya
• Abu Al-Hasan Ali ibn Othman (1297–1351), a Marinid-dynasty sultan of Morocco and Al-Andalus
• Abu'l-Hasan Ali of Granada (died 1485)
• Abul Hasan Jashori (1918–1993), Bangladeshi Islamic scholar, politician and freedom fighter
• Abolhassan Banisadr (1933 – 2021), first president of Iran after the Iranian Revolution
• Abul Hasan Chowdhury (born 1951), former Bangladeshi State Minister of Foreign Affairs

• Abul Hasan (poet) (1947–1975), Bangladeshi poet
• Abu'l-Hasan (artist) (1589 – c. 1630), a Mughal-era painter
• Abulhasan Alekperzadeh or Abulhasan (1906–1986), Azerbaijani writer
• Abou Hassan (story), one of the Arabian Nights
• Abu Hassan, an 1811 opera by Carl Maria von Weber

• Abul Hasan (cricketer) (born 1992), Bangladeshi cricketer

• Codename of Ali Hassan Salameh, Palestinian militant

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