| Country: | England |
| Coordinates: | 53.7986°N -0.0583°W |
| Official Name: | Grimston |
| Civil Parish: | East Garton |
| Unitary England: | East Riding of Yorkshire |
| Region: | Yorkshire and the Humber |
| Lieutenancy England: | East Riding of Yorkshire |
| Constituency Westminster: | Beverley and Holderness |
| Post Town: | HULL |
| Postcode District: | HU11 |
| Postcode Area: | HU |
| Dial Code: | 01964 |
| Static Image Name: | Grimston.jpg |
| Os Grid Reference: | TA279353 |
| London Distance Mi: | 155 |
| London Direction: | S |
Grimston is a hamlet in the civil parish of East Garton, in the East Riding of Yorkshire, England, in an area known as Holderness. It is situated approximately 6miles north-west of Withernsea town centre.
Grimston lies east of the B1242 road near to the North Sea coast.[1]
To the north of the hamlet, on the coast, is an ancient moated site, dating from the 12th to 14th centuries, formerly the site of a fortified medieval manor house. It was the seat of the Grimston family until a fire in the mid-17th century.
The family then built a new manor house at Grimston Garth in 18th-century Gothic style. Grimston Garth lies south of the hamlet on a private road. The stable block at Grimston Garth was designated a Grade II* listed building in 1966 and is now recorded in the National Heritage List for England, maintained by Historic England.