The Amalgamated Society of Enginemen, Cranemen and Firemen was a trade union in the United Kingdom. It represented stationary engine drivers and cranemen in a wide variety of industries. The union was founded in 1889, and within three years it had a membership of nearly 4,000 workers. However, it split in 1893, with nearly 1,000 members leaving to form the Northern United Enginemen's Association, which eventually joined the rival National Amalgamated Union of Enginemen, Firemen, Mechanics, Motormen and Electrical Workers. The remaining members renamed the union as the National Amalgamated Society of Enginemen, Cranemen, Boilermen and Firemen, and slowly rebuilt its membership, which peaked at 4,056 in 1906.