The Workers' Educational Association (WEA), founded in 1903, is the UK's largest voluntary sector provider of adult education and one of Britain's biggest charities. The WEA is a democratic and voluntary adult education movement. It delivers learning throughout England and Scotland. There was a related but independent WEA Cymru covering Wales, though it is now known as Adult Learning Wales since a merger in 2015 with YMCA Wales Community College.

The WEA's provision is usually local to its students. In 2015–16 there were over 8,000 courses delivered in over 1,800 community venues and 75% of WEA students travelled less than 2 miles to their class.

The WEA has throughout its history supported the development of similar educational initiatives and associations internationally. It is affiliated to the International Federation of Workers' Education Associations (IFWEA) which has consultative status to UNESCO. Archbishop William Temple was a strong proponent of workers' education.

Albert Mansbridge (10 January 1876 – 22 August 1952) and his wife Frances (née Frances Jane Pringle, 1876–1958) established An Association to promote the Higher Education of Working Men in 1903 (renamed 'Workers Educational Association' in 1905), funded by two shillings and sixpence from the housekeeping money.