The Commonwealth Bank of Australia, is Australia's largest bank, with in excess of 9 million customers and 37,000 staff.

The CBA operates the most popular online banking facility in Australia (, in addition to the most successful online brokerage (CommSec).

With the CBA's purchase of the funds-management heavy Colonial State Bank in the year 2000, the CBA now has operations in Australia, New Zealand, the People's Republic of China and Hong Kong, Fiji, Thailand, Malaysia, The Philippines, Singapore, Japan, Indonesia, the UK, the USA, and Vietnam.