Djamel Okacha, nom de guerre Yahia Abou al-Hamman, was an Algerian jihadist who fought in the Salafist Group for Preaching and Combat (GSPC) and later Al-Qaeda in the Islamic Maghreb (AQIM) and Jama'at Nasr al-Islam wal-Muslimin (JNIM).

Okacha was then appointed as the second-in-command of AQIM between 2012 and 2017, where he co-founded JNIM alongside Iyad Ag Ghaly and Amadou Kouffa.

In 2005, he fought in the Lemgheity attack on a Mauritanian army barracks, and in 2009 he helped assassinate American aid worker Christopher Leggett.

[6] Okacha led jihadist forces of Ansar Dine and AQIM alongside Iyad Ag Ghaly, Abou Zeid, and Belmokhtar during the Tuareg rebellion in 2012.

[9][10][8] After the death of Nabil Abou Alqama in September 2012, Droukdel appointed Okacha as "Emir of the Sahara", effectively making him second-in-command of AQIM.

[13][14] On August 10, 2014, French forces captured an AQIM cell near Timbuktu, including a close confidant of Okacha named Abou Tourab.

[15] In January 2016, Okacha applauded the November 2015 Paris attacks and welcomed Belmokhtar's return to AQIM in an interview with Mauritanian news agency al-Akhbar.

[20] Okacha was killed on February 21, 2019, during the battle of Elakla when a group of jihadist vehicles were intercepted by French forces.