The National Union of Distributive and Allied Workers (NUDAW) was a trade union in the United Kingdom.

The Co-operative Insurance Staff Union split in 1922, but several small unions joined during the 1920s, and membership reached 96,000 by 1926, rising to 274,000 in 1946, the year that the Journeymen Butchers' Federation of Great Britain joined.

[1] In 1947, NUDAW merged with the National Amalgamated Union of Shop Assistants, to form the Union of Shop, Distributive and Allied Workers.

[1] Joseph Hallsworth was General Secretary of the union for its entire existence.

[2] The union stood a large number of Labour Party candidates, many of whom won election.