Graig Syfyrddin or just The Graig, is a 423m high hill near Grosmont in north-eastern Monmouthshire, Wales.

The summit knoll is known as Edmund's Tump.

The hill consists of an isolated mass of the micaceous sandstones of the Brownstones Formation, a unit of the Old Red Sandstone well known from the nearby Black Mountains, of which it can be considered an outlier in both the geographical and geological sense.

[1] The Three Castles Walk,[2] a waymarked recreational walk in Monmouthshire linking Grosmont Castle, White Castle (Wales) and Skenfrith Castle passes over the hill.

This article relating to a location in Monmouthshire is a stub.