This is a list of the women who have been Queens consort or Empresses consort of the realm of France. As all monarchs of France have been required by law to be male, there has never been a Queen or Empress regnant of France (although many women have ruled France as Queen regents).
Since 987 there have been 53 French consorts: 49 Queens, 3 Empresses and one untitled consort (Madame de Maintenon). Ingeborg of Denmark and Anne of Brittany were each queen more than once. Marie Josephine Louise of Savoy was queen de jure during the Republican and Imperial periods, but never wife of the de facto head of the French state.
From 1285 - 1328, the crowns of Navarre and France were united by virtue of the marriage of Joan I of Navarre, Queen regnant of Navarre and Queen-consort of France, to King Philip IV of France, and by the succession of their three sons, Louis X, Philip V, and Charles IV. Thus, the wives of these three Kings were Queen-consort not only of France but of Navarre. With the death of Charles IV, however, Navarre passed out of the hands of the French Kings until 1589, and the succession to the French throne of Henry IV of France.
Upon Henry's succession, his wife, Marguerite de Valois, who was already Queen consort of Navarre, also became Queen consort of France. Thereafter, until 1791, Queens of France were also Queens of Navarre; the crown of Navarre merged with the French crown in 1620 but the French kings continued to use the title of King of Navarre until 1791. The title 'King of Navarre' was reassumed with the Restoration of 1814-15, and dropped with the Revolution of 1830; the Bonaparte and Orleans consorts did not use it.
Isabeau of Bavaria (inconsistently between 1393-1420), during the insanity of her husband Charles VI, during which she vied for power with her husband's uncles
Madame de Maintenon, mistress of Louis XIV, married the king in the winter of 1685-1686 privately by François de Harlay de Champvallon, archbishop of Paris, in the presence, it is believed, of Père la Chaise, the king's confessor, the Marquis de Montchevreuil, the chevalier de Forbin, and Alexandre Bontemps. Owing to the inequality of social status, she and the King did not marry openly (which would have allowed her to become Queen). No written proof of the marriage is extant, but that it took place is nevertheless certain.
It is important to remember that Madame de Maintenon was never Queen of France, simply a royal consort.