The British Bankers' Association (BBA) was a trade association for the UK banking and financial services sector. From 1 July 2017, it was merged into UK Finance.

It represented members from a wide range of banking and financial services. The association lobbied for its members and gave its view on the legislative and regulatory system for banking in the UK.

The BBA was founded in 1919 by the merger of two pre-existing bodies, the Central Association of Bankers (est. 1895 in London, 34 St Clements Lane) and the Association of English Country Bankers (est. 1874 and itself one of the Central Association's founders). Until 1972, the BBA was only open to British domestic, colonial and dominion banks. In 1972, it opened itself to all banks operating in the United Kingdom. In 1975 responsibility for money transmission services moved to Association for Payment Clearing Services (APACS) (which became UK Payments Administration (UKPA) in 2009). In 1991, the Committee of London Clearing Bankers (est. 1821), which in 1985 had been renamed the Committee of London and Scottish Bankers, was subsumed into the BBA.

The BBA described itself as the leading trade association for the UK banking sector with more than 230 member banks headquartered in over 50 countries with operations in 180 jurisdictions worldwide.

The BBA was a trade association owned and governed by its members.

The board was the governing body of the Association. It agreed major strategies and policies.

Member segment advisory boards provided a forum to inform the agenda of the BBA board and policy committees. There was a member segment advisory board for the major retail banks, challenger banks, small banks, major international wholesale banks, foreign banks, private banks and wealth management, and custody banking.

The BBA had four high-level committees, representing retail policy, financial policy and risk, wholesale policy, and corporate policy.