Some 88 Australians were among those killed, and Australian Prime Minister Julia Gillard and families of the victims will be present at a series of memorial events, The Wall Street Journal reported Wednesday.
Most of the people involved in the Oct. 12, 2002, attacks have been arrested.
In a crackdown in the aftermath of the bombings, police arrested 600 people and have brought 500 to trial. Foreign nations helped train and upgrade Indonesian police to better deal with terrorist activity.
There have been no major attacks since 2009.
Still, terrorist groups continue to exist in Indonesia. Two terrorist cells have been broken up in the past six weeks in the Javan city of Solo by Indonesia's anti-terrorism squad Department 88, the Australian Broadcasting Corp. reported.
Bombs were found ready to use at the site of one terror cell that called itself al-Qaida in Indonesia.
Some 1,500 security officers are expected to be on hand for Friday's memorial ceremonies
Notable deaths of 2014 [PHOTOS]
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