The Islamic Development Bank is a multilateral development finance institution that is focused on Islamic finance for infrastructure development and located in Jeddah, Saudi Arabia. There are 57 shareholding member states with the largest single shareholder being Saudi Arabia.

Islamic banking, Islamic finance, or Sharia-compliant finance is banking or financing activity that complies with Sharia and its practical application through the development of Islamic economics. Some of the modes of Islamic finance include mudarabah, wadiah (safekeeping), musharaka, murabahah (cost-plus), and ijarah (leasing).