| Country: | Scotland |
| Official Name: | Knockaird |
| Gaelic Name: | An Cnoc Àrd |
| Label Position: | left |
| Static Image Name: | An Cnoc Ard - geograph.org.uk - 1345547.jpg |
| Static Image Caption: | Fields at Knockaird, alongside the B8014, looking in the direction of Port of Ness |
| Language: | Scottish Gaelic |
| Language1: | English |
| Os Grid Reference: | NB531643 |
| Coordinates: | 58.498°N -6.238°W |
| Civil Parish: | Barvas |
| Unitary Scotland: | Na h-Eileanan Siar |
| Lieutenancy Scotland: | Western Isles |
| Constituency Scottish Parliament: | Na h-Eileanan an Iar |
| Constituency Westminster: | Na h-Eileanan an Iar |
| Post Town: | ISLE OF LEWIS |
| Postcode Area: | HS |
| Postcode District: | HS2 |
| Dial Code: | 01851 |
Knockaird (gd|An Cnoc Àrd) is a village on the Isle of Lewis in the parish of Ness, in the Outer Hebrides, Scotland. It is the highest point in Port of Ness and is home to Dùn Èistean an ancient ruined fort on a small island that is joined by a bridge. Dùn Èistean is traditionally known as a stronghold of the Clan Morrison of Lewis. Knockaird is within the parish of Barvas.[1] The B8014 travels through the settlement, between Port of Ness and Eoropie.[2] The Clach Stein standing stones are situated between Knockaird and Port of Ness.[3] [4]