The London Typographical Society was a British trade union.
The union was founded as the London Union of Compositors in 1834 by the merger of the London Trade Society of Compositors and the London General Trade Society of Compositors. The following year, it was joined by the News Society of Compositors. In 1845, the union was officially dissolved, its members designating it the South Eastern District of the National Typographical Association. The national organisation collapsed, and the London group re-established itself as the London Society of Compositors
The union had a membership of over 10,000 by 1910, and attempted to expand outside London, but the Trades Union Congress instituted arbitration which limited it to a fifteen-mile radius of central London, the Typographical Association having rights to organise in the remainder of England.
In 1955, the Society merged with the Printing Machine Managers' Trade Society and was renamed the "London Typographical Society". In 1964, it merged with the Typographical Association to form the National Graphical Association.