Luke Joseph Duffy (26 March 1890 – 3 August 1961) was an Irish trade unionist and Labour Party politician, who served for five years as a senator.
In the following years, he was vice-president and trustee of the Trades Council, secretary of the Volunteers and of the Galway City Gaelic Athletic Association, and active in the Irish National Foresters.
A few years later, he was elected as general secretary of the renamed Irish Distributive and Administrative Trade Union.
He resigned from the Seanad on 22 June 1949 to accept this appointment and also relinquished his position as General Secretary of the Labour Party.
[2] In his appointment to the IDA, Duffy worked at developing strategies that would ultimately lead to attracting direct foreign investment into Ireland.