Maria Cunitz or Maria Cunitia[1][2] (other versions of surname include: Cunicia, Cunitzin,[3] Kunic, Cunitiae, Kunicia, Kunicka;[4]1610 – August 22, 1664) was an accomplished Silesian astronomer, and the most notable female astronomer of the early modern era. She authored a book Urania propitia, in which she provided new tables, new ephemera, and a simpler working solution to Kepler's Area Law for determining the position of a planet on its elliptical path. The Cunitz crater on Venus is named after her.