The International Workingmen's Association (IWA), commonly known as the First International, was a political international which aimed to unite a variety of left-wing political groups and trade union organizations based on the working class and class struggle. It was founded in 1864 at a workers' meeting in St Martin's Hall, London, and its first congress was held in 1866 in Geneva.
- Headquarters
- London, New York City
- Inception
- September 28, 1864
