A male given name from Ancient Greek, of less common usage, variant of Nicholas.

A female given name from Ancient Greek.

A particular Christian heresy (in the early church)

Any of several place, see also San Nicolás. / An island in Ventura County, California, off the coast, one of the Channel Islands.

A municipality in Liège province, Belgium. / A community in Les Chutes-de-la-Chaudière-Ouest borough, Lévis, Quebec, Canada. / A commune in Pas-de-Calais department, Hauts-de-France, France.