| Mary of Avesnes | |
|---|---|
 Mary of Avesnes | |
| Born | 1280 Valenciennes, Nord, France |
| Died | 1354 (aged 73–74) France |
| Spouse | |
| House | Avesnes |
| Father | John II, Count of Holland |
| Mother | Philippa of Luxembourg |
Marie of Hainaut (1280 – 1354) was the daughter of John II, Count of Holland and Philippa of Luxembourg, and her brother was William I, Count of Hainaut.