| Official Name: | Sunniside |
| Country: | England |
| Region: | North East England |
| Shire County: | County Durham |
| Post Town: | DARLINGTON |
| Postcode Area: | DL |
| Postcode District: | DL13 |
| Os Grid Reference: | NZ139385 |
| Coordinates: | 54.742°N -1.785°W |
| Static Image Name: | Gladstone Terrace, Sunniside - geograph.org.uk - 151637.jpg |
Sunniside is a small rural village to the east of Tow Law and north of Crook in County Durham, England.
Sunniside has one pub, and a former post office. There is a collection of newly built homes in the west of the village, called The Paddock. There are five streets, Gladstone Terrace, Flag Terrace, Front Street (the main street) Garden Terrace, and a little offshoot along a back road to Roddymoor, called Grahams Cottages.
Sunniside is one of the highest villages within the County of Durham, at above sea level.