| Antoine, Count of Vaudémont | |
| Noble Family: | House of Lorraine |
| Father: | Frederick of Lorraine, Count of Vaudémont |
| Mother: | Margaret of Joinville |
| Spouse: | Marie of Harcourt |
| Issue: | Frederick II of Vaudémont Jean VIII of Harcourt-Lorraine Henri of Lorraine (died 1505) |
| Burial Place: | St-François-des-Cordeliers church in Nancy |
Antoine of Vaudémont ( - 22 March 1458) was Count of Vaudémont and Sieur de Joinville from 1418 to 1458. By marriage, he was also Count of Harcourt, Count of Aumale, and Baron of Elbeuf from 1452 to 1458.
His uncle Charles II, Duke of Lorraine had only daughters. Antoine did not conceal his wish to inherit the Duchy of Lorraine, and quarrelled with Charles. Charles attacked Antoine, but Antoine had Philip the Good of Burgundy as an ally.
After Charles II died in 1431, Antoine attacked the new Duke, René of Anjou, defeating and capturing him at the Battle of Bulgnéville, on 1 July 1431. A decade of negotiation followed, since Sigismund, Holy Roman Emperor was unwilling to recognise Antoine as Duke, pronouncing for René in 1434.
Ultimately, Antoine gave up his claim on the Duchy of Lorraine, by a treaty of 27 March 1441. In return, Antoine's County of Vaudémont was recognised as independent, and his son Frederick bethrothed to the Duke's daughter Yolande of Lorraine. The dynastic consequence was that Antoine's grandson became Duke.
Antoine also took part in several local armed conflicts.
Antoine was the son of Frederick I of Lorraine, Count of Vaudémont and Margaret of Joinville. He married Marie of Harcourt (1398–1476), on 12 August 1416. She was Countess of Harcourt, and of Aumale, and Baroness of Elbeuf. Her father was John VII of Harcourt, Count of Harcourt and Aumale, and her mother was Marie of Alençon. Their children were: