Delia Larkin (27 February 1878 – 26 October 1949) was a trade union organiser, journalist and actress, born to Irish parents in Liverpool, England.

Influenced deeply by her brother James Larkin’s socialist politics and literary pursuits, Delia developed a strong sense of social justice.

Her early life experiences and exposure to her brother’s activism motivated her to later join the Irish trade union movement after moving to Rostrevor, County Down, in 1907.

When her brother James traveled to England for support, she managed Liberty Hall, coordinating relief operations that provided food and resources to union members and their families.

Despite facing significant challenges, including resistance from other unions, her efforts helped sustain the strikers during one of the most critical labour disputes in Irish history.

Through these initiatives, she organized Irish-language classes, drama productions, and music programs at Liberty Hall, enriching the cultural lives of workers and their families.