Nadine Lvova Turchin (November 26, 1826 – July 17, 1904) was the wife of Union Brig. Gen. John Basil Turchin. During the American Civil War, she traveled with her husband on his military campaigns and at times acted as his surrogate in command of his troops. She kept a detailed diary that remains a leading eyewitness account of her husband's colorful career. She became widely known in the army as "Madame Turchin."