Abdul Aziz (also known as Imam Samudra, Qudama/Kudama, Fatih/Fat, Abu Umar or Heri) (14 January 1970 in Serang, Banten (then part of West Java province) – 9 November 2008 in Nusakambangan, Central Java) was an Indonesian convicted for the 2002 Bali bombing and was excuted on 9 November 2008.

On 7 August 2003, he was found guilty for his role in the Bali bombing and sentenced to death by firing squad. Originally incarcerated in Denpasar's prison, he was moved to the high-security prison island of Nusakambangan.

Together with the two other bombers who received death sentences, he launched a constitutional challenge against the use of firing squads. Samudra preferred beheading. In October 2008 he remained unrepentant and claimed revenge would be taken for his death.