Holmia may refer to:Holmia (Cilicia), a town of ancient Cilicia, now in Turkey Holmia, the Latin name of Stockholm Holmia, a residential area in the centre of Stockholm, on the island Kungsholmen Holmia, the vernacular name of Holmium(III) oxide 378 Holmia, an asteroid Holmia (trilobite), a trilobite belonging to the Olenellina suborder Holmia, a taxonomic synonym for a genus of sedges, Carex