Princess Marie of Saxe-Weimar-Eisenach may refer to:

• Grand Duchess Maria Pavlovna of Russia (1786–1859), daughter of Paul I of Russia and wife Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach
• Princess Marie of Saxe-Weimar-Eisenach (1808–1877), daughter of Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach and wife of Prince Charles of Prussia
• Princess Marie Alexandrine of Saxe-Weimar-Eisenach, daughter of Charles Alexander, Grand Duke of Saxe-Weimar-Eisenach and wife of Princess Heinrich VII Reuss of Köstritz

• Ada 95
• ADAAA
• Ada Adini
• Ada Aimee de la Cruz
• Ada Aimeé de la Cruz
• Ada Aimée de la Cruz
• Ada Aimée de la Cruz González
• Ada Airport
• Adaalat
• Ada'a Liben
• ADA Amendments Act of 2008
• Ada and Ethel
• Ada and Minna Everleigh
• Ada Andy Napaltjarri
• Ada Augusta Byron, Countess of Lovelace
• Ada Augusta Lovelace
• Ada aurantiaca
• Ada... A Way of Life
• ADA: A Way of Life
• ADA...A Way of Life
• Adab
• `Adab
• Adab al-Kabir
• Adabank
• Adabaria