| Gian Galeazzo Sforza | |
|---|---|
 Gian Galeazzo Sforza, c.1483, by Giovanni Ambrogio de Predis | |
| Duke of Milan | |
| Reign | 26 December 1476 – 21 October 1494 |
| Predecessor | Galeazzo Maria Sforza |
| Successor | Ludovico Sforza |
| Born | 20 June 1469 Abbiategrasso |
| Died | 21 October 1494 (aged 25) Pavia |
| Spouse | |
| Issue | Francesco Sforza Ippolita Maria Sforza Bona, Queen of Poland Bianca Maria Sforza |
| House | Sforza |
| Father | Galeazzo Maria Sforza |
| Mother | Bona of Savoy |
Gian Galeazzo Sforza (20 June 1469 – 21 October 1494), also known as Giovan Galeazzo Sforza, was the sixth Duke of Milan.