| Iványi | |
| Source1 Elevation: | 470m (1,540feet) |
| Mouth Coordinates: | 48.0054°N 19.9352°W |
| Subdivision Type1: | Country |
The Iványi (Hungarian: Iványi-patak) originates in the Mátra range at nearly 470 metres above sea level, south of Mátraterenye, Nógrád County, Hungary. It is a left tributary of the Zagyva. The stream flows northward and reaches the Zagyva north of Mátramindszent.
The Tószeri flows into it not far from Mátraterenye.