National Society of Operative Printers and Assistants
（重定向自NATSOPA）
The National Society of Operative Printers and Assistants (NATSOPA) was a British trade union.
Formed as part of the New Unionism movement in September 1889, the union was originally named the Printers' Labourers' Union and was led by George Evans. In 1899, it was renamed the Operative Printers' Assistants Union, and in 1904 it became the National Society of Operative Printers' Assistants, taking the acronym NATSOPA for the first time. In 1911, it assumed its long-term name, the "National Society of Operative Printers and Assistants". By this point, it had 4,722 members, and it grew rapidly, having 25,000 members in 92 branches by 1929.