Anna d'Alençon

Anne d'Alençon
Marquise of Montferrat
Portrait of Anne d'Alençon by Macrino d’Alba
Predecessor	William IX
Born	30 October 1492
Died	18 October 1562 Casale Monferrato, Italy
Spouse	William IX Paleologos, Marquis of Montferrat
Issue	Maria (1509–1530) Margherita (1510-1566) Boniface IV of Montferrat (1512-1530)
House	House of Valois-Alençon
Father	René of Alençon
Mother	Margaret of Lorraine

Anne d'Alençon (Italian: Anna d'Alençon) (30 October 1492 – 18 October 1562), Lady of La Guerche, was a French noblewoman and a Marquise of Montferrat as the wife of William IX, Marquis of Montferrat. She acted as Regent of the Marquisate of Montferrat for her son, Boniface from 1518 to his death in 1530.

Anne was the third child of René, Duke of Alençon and his second wife Margaret of Lorraine, daughter of Frederick, Count of Vaudémont and Yolande of Anjou. Her father died two days after her birth.

She was betrothed to William IX, Marquis of Montferrat of the Palaiologos family in 1501 and married him on 31 October 1508, the day after her sixteenth birthday, in the church of St. Sauveur in Blois. She bore her husband three children: Maria (1509–1530), Margherita, (1510–1566), and Boniface (1512–1530), William's heir who became Boniface IV of Montferrat.

In 1517, her eldest daughter, Maria, was betrothed to Federico II Gonzaga, son of Isabella d'Este, who later became Marquis and Duke of Mantua. The marriage contract was annulled, however, after Federico accused Maria of attempting to poison his mistress Isabella Boschetti, wife of the Count of Calvisano.