Holy Vale (Cornish: Hal an Val)[1] is a minor valley and small settlement within, on the island of St Mary's, the largest of the Isles of Scilly, England.

[2] The name Holy Vale was originally La Val in 1301, it comes from the Norman French for low lying, at the foot.

[3] The settlement of Holy Vale lies in the upper part of the valley, which leads down to the Higher Moors and Porth Hellick on the southeast coast of the island.

The centre of the settlement, where there is a small junction and a signpost, is at an elevation of 12 metres (39 ft) above sea level.

The only commercial vineyard on St Mary's is centred in Holy Vale, with the vines located in several small fields in the area.