| Monefelim River | |
| Name Etymology: | bogland river |
| Map: | Nore River Map.jpg |
| Map Size: | 300px |
| Map Alt: | Map showing the location of the Three Sisters rivers. |
| Pushpin Map: | Island of Ireland |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth in Ireland |
| Pushpin Map Alt: | Location of the mouth in Ireland |
| Subdivision Type1: | County |
| Subdivision Name1: | Ireland |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Kilkenny |
| Subdivision Type3: | Barony |
| Subdivision Name3: | Gowran |
| Length: | 17km (11miles) |
| Source1: | Gowran (barony) |
| Source1 Coordinates: | 52.7118°N -7.1036°W |
| Mouth: | Ballyvalden River |
| Mouth Coordinates: | 52.6576°N -7.0195°W |
| Mouth Elevation: | 28.36m (93.04feet) |
| Progression: | Ballyvalden River—River Barrow—Celtic Sea |
| River System: | River Barrow |
| Basin Size: | 41.79km2 |
| Custom Label: | EU_CD |
| Custom Data: | IE_SE_14M030600 |
The Monefelim River is a river in County Kilkenny, Ireland. It is a tributary of the Ballyvalden River before it in turn joins the River Barrow. It is part of the Barrow catchment area. The local authority is Kilkenny County Council.