Mohammed Nazir bin Lep (also referred to as Lillie; born December 26, 1976) is a Malaysian alleged to be affiliated with Jemaah Islamiyah and Al-Qaeda, who was held in American DoD custody in the Guantanamo Bay detention camp.

He is one of 119 detainees previously held at secret Black Sites abroad,[4] which included being subjected to Enhanced Interrogation Techniques.

[5][6] In the ODNI biographies, Bin Lep is described as a high value detainee and lieutenant of Hambali (along with another alleged subordinate, Mohamad Farik Amin).

[15] On January 26, 2024, a military jury at Guantánamo sentenced Nazir and Farik to 23 years' confinement for their roles in the bombings.

However, the sentence may be reduced to at most 6 years' confinement due to a secret deal the pair reached with a senior Pentagon official.