Harriet Hardy Taylor Mill (March 8, 1824, London – October 2, 1908, Bournemouth) was a prominent British philosopher and advocate for women's rights. Known for her thoughtful contributions to social reform and gender equality, she was also a close collaborator and wife of the economist and philosopher John Stuart Mill. Taylor Mill dedicated much of her life to advancing issues related to women's enfranchisement and social justice, leaving a lasting impact on the movement for gender equality.