Joe O'Flynn is an Irish trade union leader and former politician.
Born in the Fairhill area of Cork, O'Flynn joined a trade union when he was sixteen, and began working for it full-time six years later.
O'Flynn was active in the Labour Party, and was elected to Cork City Council in 1991. He stood in the Cork South-Central by-election, 1994, but took only 4.6% of the first preference votes, and was not elected. He served as Lord Mayor of Cork in 1998/1999.
Meanwhile, O'Flynn's union career continued to develop. He served as National Industrial Officer and then a Regional Officer of what became SIPTU. In 2002, he was elected as the union's general secretary. The following year, he was elected as treasurer of the Irish Congress of Trade Unions. He also serves on Bord Gais Eireann.