The nautiloid cephalopod fauna of the Silurian rocks of the Pentland Hills, Scotland is described. Though fragmentary, the available material permits assignment to 14 genera, for 10 of which specific names are given. Nearly all of the material is from the Wether Law Linn Formation and mostly from its lower part. Implications as to stratigraphical age are discussed. The fauna of the Wether Law Linn Formation has something of a Wenlock flavour.