Amadeus VIII, Duke of Savoy
| Antipope Felix V | |
|---|---|
Portrait of antipope Felix V in the Nuremberg Chronicle (1493) | |
| Count of Savoy | |
| Reign | 1391–1416 |
| Predecessor | Amadeus VII |
| Successor | Title abolished |
| Regent | Bonne of Bourbon (1391–1397) |
| Duke of Savoy | |
| Reign | 1416–1440 |
| Predecessor | Title established |
| Successor | Louis I |
| Regent | Louis I (c. 1434 – 5 February 1440) |
| Spouse | |
| Issue (among others) | |
| House | Savoy |
| Father | Amadeus VII, Count of Savoy |
| Mother | Bonne of Berry |
| Church | Catholic Church |
| Papacy began | 24 July 1440 |
| Papacy ended | 7 April 1449 |
| Predecessor | Eugene IV Roman claimant: |
| Opposed to | Pope Eugene IV Pope Nicholas V |
| Orders | |
| Consecration | 24 July 1440 |
| Personal details | |
| Born | 4 September 1383 |
| Died | 7 January 1451 (aged 67) |
| Coat of arms | |
Amadeus VIII (4 September 1383 – 7 January 1451), nicknamed the Peaceful, was Count of Savoy from 1391 to 1416 and Duke of Savoy from 1416 to 1440. He was the first to hold the ducal title, granted by Emperor Sigismund. Known for his diplomatic temperament and administrative reforms, he strengthened the state's institutions and fostered internal peace.
He also claimed the papacy from 1439 to 1449 as Antipope Felix V, in opposition to Popes Eugene IV and Nicholas V, becoming the last historical antipope recognised by a significant portion of the Catholic clergy.