The Bombay Stock Exchange (BSE) (Marathi: मुंबई शेअर बाजार Bombay Śhare Bāzaār) (formerly, The Stock Exchange, Bombay) is a stock exchange located on Dalal Street, Mumbai and is the oldest stock exchange in Asia. The equity market capitalization of the companies listed on the BSE was US$1.63 trillion as of December 2010, making it the 4th largest stock exchange in Asia and the 8th largest in the world. The BSE has the largest number of listed companies in the world.

As of June 2011, there are over 5,085 listed Indian companies and over 8,196 scrips on the stock exchange, the Bombay Stock Exchange has a significant trading volume. The BSE SENSEX, also called "BSE 30", is a widely used market index in India and Asia. Though many other exchanges exist, BSE and the National Stock Exchange of India account for the majority of the equity trading in India. While both have similar total market capitalization (about USD 1.6 trillion), share volume in NSE is typically two times that of BSE.