The Senussi campaign took place in North Africa from November 1915 to February 1917, during the First World War. The campaign was fought by the Kingdom of Italy and the British Empire against the Senussi, a religious order of Arabic nomads in Libya and Egypt. The Senussi were courted by the Ottoman Empire and the German Empire. Recognising French and Italian threats, the Ottoman Sultan Abdulhamid II had twice sent his aide-de-camp Azmzade Sadik El Mueyyed to meet Sheikh Muhammed El Mehdi El Senussi to cultivate positive relations and counter the west European scramble for Africa. In the summer of 1915, the Ottomans persuaded the Grand Senussi Ahmed Sharif as-Senussi to declare jihad, attack British-occupied Egypt from the west and to encourage insurrection in Egypt to divert British forces.

The Senusiyya, Senussi or Sanusi are a Muslim political-religious Sufi order and clan in Libya and surrounding regions founded in Mecca in 1837 by the Grand Sanussi, the Algerian Muhammad ibn Ali al-Sanusi.