guillemot

thumb|right|Common guillemots, one in bridled form (with "spectacles"), and one [[Brünnich's guillemot (U. lomvia, with white-marked bills) from the genus Uria]] thumb|right|Black guillemot (C. grylle icelandicus) thumb|right|Common guillemot in bridled form, a white circle around the eye with an extension backwards suggesting they are wearing spectacles

Guillemot ( ) is the common name for several species of seabird in the Alcidae or auk family, part of the order Charadriiformes. In Europe, the term covers two genera, Uria and Cepphus. In North America the Uria species are called murres and only the Cepphus species are called "guillemots".