Pi Day is celebrated on March 14th, a perfect opportunity to honor some of the notable women in the field of mathematics. Early trailblazers include Ada Lovelace, Sofia Kovalevskaya, Mary Cartwright, and Joan Clarke. Boundary breakers of NASA include Dorothy Vaughan, Katherine Johnson, and Mary W. Jackson. Modern marvels include Grace Hopper, Karen Uhlenbeck, and Maryam Mirzakhani. These women have made significant contributions to the field of mathematics and continue to inspire future generations.