Antonio D'Achiardi (28 November 1839, in Pisa – 10 December 1902, in Pisa) was an Italian geologist, paleontologist and mineralogist known for his mineralogical and paleontological studies of Tuscany.

[2][3] In 1859 he received his doctorate in sciences from the University of Pisa, afterwards working as an assistant for chemistry (from 1861).

[4] Three months after this appointment, he lost the use of his left eye due to a laboratory accident involving nitric acid.

He subsequently abandoned his career in chemistry, and instead devoted his attention to geology and mineralogy, becoming a student of Giuseppe Meneghini.

[7][8][9] In 1906, his son Giovanni D'Achiardi described and named the mineral after he discovered it in a granitic pegmatite.