The name Mary Fitzgerald is shared by several remarkable women across different fields, making it a designation of considerable distinction in the worlds of activism, art, journalism, politics, and sport. The most historically significant of these is the Irish-born South African political activist and trade unionist, whose life and work left an indelible mark on the labor and socialist movements of the early twentieth century.

Born in 1883 in Ireland, Mary Fitzgerald emigrated to South Africa, where she became a pioneering figure in the fight for workers' rights and social justice. As a dedicated trade unionist, she was a prominent voice in the burgeoning labor movement, advocating for fair wages and improved working conditions. Her activism was not confined to the workplace; she was also a passionate campaigner for women's suffrage and a vocal proponent of socialist ideals. Fitzgerald was a charismatic and fearless orator who often clashed with authorities, and she earned the affectionate nickname "Pickhandle Mary" for her willingness to lead protests and confront opposition. Her leadership during significant strikes and her role in the early communist and labor organizations solidified her legacy as a trailblazer for both labor rights and gender equality in South Africa. She passed away in 1960, but her contributions are still remembered in the history of the nation's political struggle.

In the contemporary era, the name is carried by other notable figures. Mary Fitzgerald (born 1956) is an Irish artist whose work has been exhibited widely, contributing to the modern art scene with a distinctive and thoughtful visual language. Another prominent namesake is Mary Anne Fitzgerald (born 1945), a South African-born British journalist and author recognized for her extensive and courageous reporting from Africa. Her work as a development aid worker and writer has provided deep insight into the continent's political and social landscapes. Additionally, Mary Fitzgerald serves as a member of the South Dakota House of Representatives, contributing to state-level governance and policy, while a younger Mary Fitzgerald (born 1999) has gained recognition as an Irish Paralympic athlete, representing her country on the international sporting stage. Each of these women, in their respective arenas, has built a reputation for dedication and achievement, demonstrating the diverse and impactful ways the name Mary Fitzgerald has been represented across the globe.