| Daia | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Harghita County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Ighiu, Daia |
| Length: | 9km (06miles) |
| Mouth: | Homorodul Mare |
| Mouth Location: | Orășeni |
| Mouth Coordinates: | 46.1663°N 25.3594°W |
| Progression: | Homorodul Mare→ |
| Basin Size: | 28km2 |
The Daia is a right tributary of the river Homorodul Mare in Romania. It flows into the Homorodul Mare in Orășeni.[1] Its length is 9km (06miles). Its basin size is 28km2.