Grimstead is a civil parish on the River Dun in Wiltshire, England, to the south-east of Salisbury.

[2][3] Today both are within the area of the Clarendon benefice, a group of nine rural parishes.

[4] The first tier of local government is Grimstead Parish Council.

[5] The parish is in the area of Wiltshire Council unitary authority, which performs all significant local government functions.

For parliamentary purposes, the parish falls within the Salisbury constituency.