O. lutea

O. lutea may refer to:


 * Odontadenia lutea, a flowering plant
 * Odontites lutea, a dicotyledonous plant
 * Odostomia lutea, a sea snail
 * Oiketicoides lutea, a bagworm moth
 * Oncis lutea, a sea slug
 * Ophiocordyceps lutea, a parasitic fungus
 * Ophrys lutea, an Old World orchid
 * Orchis lutea, a herbaceous plant
 * Orobanche lutea, a parasitic plant
 * Oxystylis lutea, a plant native to the Mojave Desert