Helena Moloney was born in Dublin in 1884. She joined Inghinidhe na hÉireann in 1903 and was the editor of the organisation’s newspaper Bean na hÉireann.
In 1911 Helena was arrested during protests organized by Sinn Féin against the visit of King George V to Dublin. She was sentenced to one months’ imprisonment but was released after 14 days.
During the Lock Out in 1913 Helena joined the labour movement and in 1915 was invited to become secretary of the Irish Women Workers Union.
As a member of the Citizen Army, Helena fought in the Easter Rising of 1916 and was imprisoned following the surrender. After her release she assisted Countess Markievizc who had been appointed to the Ministry of Labour in the new Dáil Éireann and served as a District Justice in the Republican court in Rathmines.
Helena visited Russia in 1929 as a guest of the Soviet Trade Union movement and on her return set up the Friends of Soviet Russia. In the 1930’s she became active in the Women’s Prisoners’ Defence League. In 1936 she became president of the Irish Trade Union Congress but was forced to retire due to ill health in 1946.
Helena Moloney died in January 1967 and is buried in Glasnevin cemetery.