Sheet Metal Workers' International Association

Sheet Metal Workers' International Association
AbbreviationSMWIA
Merged intoInternational Association of Sheet Metal, Air, Rail and Transportation Workers
Formation1888 (1888)
Dissolved2014 (2014)
TypeTrade union
HeadquartersWashington, DC, US
Location
    • Canada
    • United States
Membership
150,000
Affiliations
Formerly called
Tin, Sheet Iron and Cornice Workers' International Association

The Sheet Metal Workers' International Association (SMWIA) was a trade union of skilled metal workers who perform architectural sheet metal work, fabricate and install heating and air conditioning work, shipbuilding, appliance construction, heater and boiler construction, precision and specialty parts manufacture, and a variety of other jobs involving sheet metal. On August 11, 2014, it merged with the United Transportation Union (UTU) to form the International Association of Sheet Metal, Air, Rail and Transportation Workers, known by the acronym, SMART.

The Sheet Metal Workers' International Association represented about 150,000 members in 185 local unions in the United States and Canada.