| Tat | |
| Pushpin Map: | United Kingdom Norfolk |
| Pushpin Map Caption: | Location of the river mouth within Norfolk |
| Subdivision Type1: | Country |
| Subdivision Name1: | England |
| Subdivision Type3: | Region |
| Subdivision Name3: | Norfolk |
| Length: | 7.2km (04.5miles) |
| Source1: | Syderstone Common |
| Source1 Location: | Tattersett |
| Source1 Coordinates: | 52.8476°N 0.7252°W |
| Source1 Elevation: | 48m (157feet) |
| Mouth: | River Wensum |
| Mouth Location: | Tatterford |
| Mouth Coordinates: | 52.8171°N 0.782°W |
| Mouth Elevation: | 39m (128feet) |
| River System: | River Wensum |
The River Tat is a short river in the County of Norfolk, England. It is an important headwater for the River Wensum of which it is a tributary. Its source is on Syderstone Common, just north of the village of Tattersett. The marshes and pools of Syderstone Common that provide the headwaters for the river are a site of special scientific interest (SSSI) and are the home of a viable colony of the rare Natterjack Toad.[1]