Amanullah or Amanallah is a male Muslim given name (Arabic: أمان الله) meaning the trust or protection of God. It may refer to:

• Amānullāh Khān (1892–1960), ruler of Afghanistan from 1919 to 1929
• Amanullah Khan (disambiguation), several other people called Amanullah Khan
• Amanullah Jahanbani (1895–1974), Iranian senior general of Reza Shah Pahlavi
• Amanullah Sailaab Sapi (1933–1979), Afghan poet and writer
• Amanullah Asaduzzaman (1942–1969), Bengali student activist killed by police
• Amanallah Alimoradi [fa], Iranian Cleric
• Azzedine Amanallah (born 1956), Moroccan footballer
• Amanullah (Bagram detainee), Afghan, captured in early 2004, and held in extrajudicial detention in the United States Bagram detention facility
• Amanullah Zadran, former Taliban leader, Pashtun, Afghan government minister
• Amanullah Khan Niazi, the deputy superintendent of Central Prison Karachi