alt=A Glaucium vitellinum in Fars province of iran|thumb|Glaucium sp. [[Fars province of Iran]]
Glaucium (horned poppy) is a genus of about 25 species of annual, biennial or perennial herbaceous flowering plants in the family Papaveraceae, native to Europe, north Africa, and southwest and central Asia.
- Glaucium acutidentatum <small>Hausskn. & Bornm.</small>
- Glaucium afghanicum <small>Kitam.</small>
- Glaucium alakirensis <small>Aykurt, K.Yıldız & Özçandır</small>
- Glaucium aleppicum <small>Boiss. & Hausskn.</small>
- Glaucium arabicum <small>Fresen.</small>
- Glaucium calycinum <small>Boiss.</small>
- Glaucium cappadocicum <small>Boiss.</small>
- Glaucium contortuplicatum <small>Boiss.</small>
- Glaucium corniculatum <small>(L.) Rudolph</small> (sea poppy)
- Glaucium cuneatum <small>Cullen</small>
- Glaucium elbursium <small>Mory</small>
- Glaucium elegans <small>Fisch. & C.A.Mey.</small>
- Glaucium fimbrilligerum <small>Boiss.</small>
- Glaucium flavum <small>Crantz</small> (yellow horned poppy)
- Glaucium grandiflorum <small>Boiss. & A.Huet</small> (grand-flowered horned poppy)
- Glaucium insigne <small>Popov</small>
- Glaucium leiocarpum <small>Boiss.</small>
- Glaucium mathiolifolium <small>Mobayen</small>
- Glaucium oxylobum <small>Boiss. & Buhse</small>
- Glaucium quadratifolium <small>Fedde</small>
- Glaucium refractocarpum <small>Gilli</small>
- Glaucium secmenii <small>Yıld.</small>
- Glaucium squamigerum <small>Kar. & Kir.</small>
- Glaucium vitellinum <small>Boiss. & Buhse</small>
- Glaucium yazdianum <small>Tavakkoli & Assadi</small>