Isnilon Totoni Hapilon (March 10, 1968 – October 16, 2017), also known by the nom de guerre Abu Abdullah al-Filipini,[note 1] was a Filipino Islamist militant affiliated with ISIS.

[4] An April 2016 issue of ISIL's weekly newsletter Al Naba said that Hapilon had been appointed as "emir of all Islamic State forces in the Philippines".

[13][14] To help identify Hapilon, the US government described his personality as "likable by peers; proud and confident in his abilities" and his physique as "skinny; may have chin hair and slight mustache", being 5 ft. 5 in (1.65 m) to 5 ft. 7 in (1.70 m) tall[7] and weighing around 120 lb (54 kg).

A strong military offensive in 1994 and the death of Commander Sali forced them to flee to Sampinit Complex in Sumisip, where he met Abdurajak Abubakar Janjalani.

[9][12][15] Disaffected with the MNLF while in hiding in Sampinit, Hapilon joined the Abu Sayyaf group led by Abdurajak Abubakar Janjalani, who also became his religious mentor.

[22] On February 24, 2006, he was added to the FBI's Most Wanted Terrorists list, along with Janjalani and Jainal Sali, Jr.[23] The Rewards For Justice Program of the US State Department offered up to US$5 million (approx.

Hapilon sustained a "slight wound" on the head during the raid, but his followers managed to drag him off safely before the soldiers could seize control of their base.

[29] On July 23, 2014, a video of Hapilon along with other masked men was uploaded to YouTube, where they swore their allegiance to Abu Bakr al-Baghdadi, the leader of ISIL.

[note 3][34][35] On April 9, 2016, Hapilon and Basilan-based commander Furuji Indama led 150 Abu Sayyaf fighters on an attack against government forces in Tipo-Tipo, Basilan.

[36][37][38] A June 21, 2016, video by ISIL entitled "The Solid Structure" recognized Hapilon as the mujahid authorized to lead the jihadists of the Islamic State in the Philippines, and designated him as the emir for Southeast Asia.