| Eleanor Percy | |
| Duchess of Buckingham | |
| Noble Family: | Percy |
| Spouse: | Edward Stafford, 3rd Duke of Buckingham John Audley |
| Issue: | Lady Elizabeth Stafford Lady Katherine Stafford Lady Mary Stafford Henry Stafford, 1st Baron Stafford |
| Father: | Henry Percy, 4th Earl of Northumberland |
| Mother: | Lady Maud Herbert |
| Birth Place: | Leconfield, Yorkshire, England |
| Death Date: | 13 February 1530 (aged around 56) |
Eleanor Percy, Duchess of Buckingham (– 13 February 1530), was the eldest daughter of Henry Percy, 4th Earl of Northumberland, by his wife, Lady Maud Herbert, daughter of William Herbert, 1st Earl of Pembroke. Eleanor Percy married Edward Stafford, 3rd Duke of Buckingham, who was beheaded in 1521 on charges of plotting to overthrow the king, Henry VIII. As a result, the Dukedom of Buckingham and estates were forfeited, and her children lost their inheritance.
Eleanor Percy was born about 1474 in Leconfield, Yorkshire. On 14 December 1490, at about sixteen years of age, Eleanor married Edward Stafford, 3rd Duke of Buckingham, who was five years old when his father, the rebellious 2nd Duke of Buckingham, was attainted and executed for high treason. Edward Stafford's mother, Catherine Woodville, went on to marry Jasper Tudor, the first Duke of Bedford and thirdly, Richard Wingfield.
Two years after his father's execution, when Henry VII ascended the throne, the attainder was reversed, and the title and estates of Edward's father were restored to him. At seven, Edward became the third Duke of Buckingham and also the ward of King Henry VII's mother, Lady Margaret Beaufort.
After Edward's death, Eleanor remarried to John Audley. Her second marriage was childless.
Eleanor Percy bore her first husband, Edward Stafford, four children: