| Frederick I, Count of Vaudémont | |
| House: | House of Lorraine |
| Father: | John I, Duke of Lorraine |
| Mother: | Sophie of Württemberg |
| Spouse: | Margaret of Joinville |
| Issue: | Antoine Elisabeth Frederic Charles John |
| Birth Date: | 9 January 1369 |
| Death Place: | Agincourt |
Frederick I, or Ferry I[1] of Lorraine (9 January 1369 - October 25, 1415 in the Battle of Agincourt[2]) was a Count of Vaudémont.
He was the son of Duke John I of Lorraine (1346-1390) and Sophie of Württemberg (1343-1369).[3] He was a younger brother of Charles II. In 1394, Frederick married Margaret, the heiress of Vaudémont and Joinville, and became Count of these lands in her right.[4] [5] He founded the House of Vaudémont, a junior branch of the House of Lorraine.
His children were:[6]
Dynastic problems in the senior line caused his great-grandson René of Vaudémont to become Duke of Lorraine as René II in 1473.