Archduchess Isabella Maria Theresia Christine Eugenie of Austria-Teschen (17 November 1888 – 6 December 1973) was a daughter of Archduke Friedrich, Duke of Teschen and his wife, Princess Isabella of Croÿ.
She was a member of the House of Habsburg-Lorraine (her grandfather, Archduke Karl Ferdinand of Austria, was a grandson of Holy Roman Emperor Leopold II).
Isabella was notable for her brief marriage to Prince Georg of Bavaria.
Their separation and subsequent annulment were widely reported in newspapers.
As a result of this and her later actions as a nurse in the Austrian army, Isabella became considered as a romantic figure; one publication called her "the most romantic heroine of the present war in Austria".