Amalgamated Transit Union

Amalgamated Transit Union
Abbreviation	ATU
Formation	September 15, 1892
Type	Trade union
Headquarters	Silver Spring, Maryland, US
Locations	Canada; United States; ;
Members	200,000 (2020)
President	John A. Costa
Secretary-treasurer	Kenneth R. Kirk
Executive vice president	Yvette J. Trujillo
Affiliations	AFL–CIO; Canadian Labour Congress; International Transport Workers' Federation;
Website	atu.org
Formerly called	Amalgamated Association of Street Railway Employees of America; Amalgamated Association of Street, Electric Railway and Motor Coach Employees of America;

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The Amalgamated Transit Union (ATU) is a labor organization in the United States and Canada that represents employees in the public transit industry. Established in 1892 as the Amalgamated Association of Street Railway Employees of America, the union was centered primarily in the Eastern United States; as of 2020, ATU has had over 200,000 members throughout the United States and Canada.