| Country: | England |
| Coordinates: | 51.7286°N -0.1164°W |
| Static Image: | St Mary, Newgate Street, Herts - geograph.org.uk - 355383.jpg |
| Static Image Width: | 250px |
| Static Image Caption: | Ponsbourne St Mary's Church, Newgate Street |
| Official Name: | Newgate Street |
| Shire District: | Welwyn Hatfield |
| Shire County: | Hertfordshire |
| Region: | East of England |
| Constituency Westminster: | Welwyn Hatfield |
| Post Town: | HERTFORD |
| Postcode District: | SG13 |
| Postcode Area: | SG |
| Dial Code: | 01707 |
| Os Grid Reference: | TL305045 |
Newgate Street is a village near Cuffley, in Hatfield civil parish, in the Welwyn Hatfield district of Hertfordshire, England. It is approximately six miles south-west of Hertford and has a population of 400. At the 2011 Census the population was included in the town of Hatfield.
The village has an Anglican church, a school (Ponsbourne St Mary's), a restaurant (The Gables), two pubs (The Crown and The Coach and Horses) and a hotel (Ponsbourne Park Hotel). There is also a small town hall and two outdoor tennis courts.Originally in the Manor of Tolmers, the present Tolmers Park House dates from 1761. Since World War I it has been used as a military hospital, a girls' boarding school, a geriatric hospital and has now been converted to luxury apartments. Part of the estate became Tolmers Scout Camp in 1940. The house lies just to the South-West of the village.