| Dittaino | |
| Mouth: | Simeto |
| Subdivision Type1: | Country |
| Subdivision Name1: | Italy |
| Subdivision Type2: | Region |
| Subdivision Name2: | Sicily |
| Length: | 105km (65miles) |
The Dittaino (Greek: Greek, Ancient (to 1453);: Χρύσας; Latin: Chrysas) is a river of central Sicily which rises in the Heraean Mountains, not far from the modern towns of Gangi and Enna. It is 105km (65miles) long.
After flowing through the territory of Assorus, where its tutelary divinity was worshipped with peculiar honors during the Greek civilization, and afterwards through that of Agyrium, it joins the Simeto in the plain of Catania, about 30km (20miles) from its mouth.
The modern name is the Sicilian version of Arab vocable Wādī al-tīn, namely "The River of Sandstone".