The National Graphical Association was a typographical union formed in 1963 when the Typographical Association and the London Typographical Society merged. In 1965 it took over the National Union of Press Telegraphists and the Association of Correctors of the Press. The late 1960s saw the NGA expand further, absorbing the National Society of Electrotypers and Stereotypers in 1967, and the Amalgamated Society of Lithographic Printers in 1969.

The late 1970s and early 1980s saw the union expand again. In 1979 the National Union of Wallcoverings, Decorative and Allied Trades transferred its engagements to the National Graphical Association. In 1982 the NGA amalgamated with SLADE: the Society of Lithographic Artists, Designers, Engravers and Process Workers, and became officially known as the National Graphical Association (1982).

The NGA had branches throughout England, Wales, Northern Ireland and the Republic of Ireland. Scotland was covered by a separate union, the Scottish Graphical Association, and later by the Society of Graphical and Allied Trades (SOGAT.

In 1991 the NGA became part of the Graphical, Paper and Media Union (GPMU) when it amalgamated with SOGAT. The GPMU itself would merge with AMICUS in 2004, and AMICUS itself became part of UNITE in 2007.