Bank Syariah Indonesia

PT Bank Syariah Indonesia Tbk
	The Tower Jakarta, where BSI is headquartered
Company type	Public
Traded as	IDX: BRIS
Industry	Islamic banking and finance
Predecessors	Bank Syariah Mandiri; Bank BNI Syariah; Bank BRIsyariah;
Founded	17 November 2008 (as BRIsyariah); 1 February 2021 (as Bank Syariah Indonesia);
Headquarters	The Tower Jakarta, Jakarta, Indonesia
Key people	Hery Gunardi (President Director); Mulya E. Siregar (President Commissioner)
Total assets	Rp 205,72 trillion
Owners	Government of Indonesia (ultimate controlling shareholder): Bank Mandiri (50.83%); Bank Negara Indonesia (24.85%); Bank Rakyat Indonesia (17.25%); ;
Website	bankbsi.co.id

Bank Syariah Indonesia (lit. 'Sharia Bank of Indonesia', abbreviated as BSI) is a state-owned Islamic bank in Indonesia. The bank was officially founded on 1 February 2021 as a result of merger between state-owned sharia banks.

Bank Syariah Indonesia has obtained the merger permit from the Financial Services Authority (OJK) dated 27 January 2021, using BRI Syariah as the surviving company. As of June 2024, BSI is the world's largest Islamic bank by customer numbers.