| Mârghia | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Olt County, Argeș County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Bădicea, Moțoești, Mârghia de Sus, Mârghia de Jos |
| Length: | 22km (14miles) |
| Mouth: | Cotmeana |
| Mouth Coordinates: | 44.6316°N 24.7477°W |
| Progression: | Cotmeana→ |
| Basin Size: | 43km2 |
| Custom Label: | River code |
| Custom Data: | IX.1.6.4 |
The Mârghia is a right tributary of the river Cotmeana in Romania. It flows into the Cotmeana near Ciești. Its length is 22km (14miles) and its basin size is 43km2.