Abu Zafar or Abu Jafar may refer to:

• Abu Ja'far al-Mansur (714–775), second Abbasid caliph
• Abu Jaʿfar Abdullah al-Maʾmun ibn Harun (786–833), seventh Abbasid caliph
• Abu Jafar Mohammad Ibn Mousa Khwarizmi (780–850), Arab polymath
• Abu Jafar Muhammad ibn Musa ibn Shakir (803–873), Persian scholar
• Abu Jafar Muhammad ibn Jarir al-Tabari (839–923), Persian Sunni Muslim scholar and polymath
• Abu Jafar Al-Tahawi (853–933), Egyptian Arab Hanafi jurist and traditionalist theologian
• Abu Jafar al-Saduq Ibn Babawayh al-Qummi (923–991), Persian Shia Islamic scholar
• Abu Jaʿfar an-Nahhas (died 949), Egyptian Muslim scholar
• Abu Jafar ibn Atiyya (died 1158), Moroccan writer
• Abu Jafar ibn Harun al-Turjali (died 1180), Andalusian physician
• Abu Jafar Shamsuddin (1911–1988), Bangladeshi writer
• Sikandar Abu Zafar (1918–1975), Bangladeshi journalist and poet
• Abu Zafar Obaidullah (1934–2001), Bangladeshi poet and civil servant
• Kazi Abu Zafar Siddique (1940-2012), Bangladeshi recital artist and cultural activist
• Abu Zafar (lyricist) (1943–2024), Bangladeshi lyricist and composer
• Abu Zafar (born 1963), Bangladeshi diplomat
• Abu Jafar Mohammad Moinuddin, Bangladeshi politician