Abu Bakar Bashir (Arabic: أبو بكر باعشير;Malay pronunciation: [abubakar basir]; pronunciation AH-boo BAH-kahr BAH-SHEER;Arabic pronunciation: [əˌbuˈbɛkər ba:ʕaɕir]) also Abubakar Ba'asyir, Abdus Somad, and Ustad Abu ("Teacher Abu"); born 17 August 1938) is an Indonesian Muslim cleric and leader of Jamaah Ansharut Tauhid.
He ran the Al-Mukmin boarding school in Ngruki, Central Java, which he co-founded with Abdullah Sungkar in 1972. He was in exile in Malaysia for 17 years during the secular New Order administration of President Suharto resulting from various activities, including urging the implementation of Sharia law.