Konrad III the Old | |
|---|---|
| Duke of Oleśnica, Koźle | |
 | |
| Born | c. 1359 |
| Died | 28 December 1412 |
| Noble family | Silesian Piasts of Oleśnica |
| Spouse(s) | Judith/Jutta/Guta |
| Issue | Konrad IV the Elder Konrad V Kantner Konrad VI the Dean Konrad VII the White Konrad VIII the Younger Euphemia Hedwig |
| Father | Konrad II the Gray |
| Mother | Agnes of Cieszyn |
Konrad III the Old (Polish: Konrad III Stary) (c. 1359 – 28 December 1412) was a Duke of Oleśnica, Koźle, half of Bytom and half of Ścinawa since 1377 (until 1403 with his father as co-ruler).
He was the only son of Konrad II the Gray, Duke of Oleśnica, by his wife Agnes, daughter of Casimir I, Duke of Cieszyn.