O. spinosa may refer to: Ochrotrichia spinosa, a microcaddisfly species in the genus Ochrotrichia Octonoba spinosa, a non-venomous spider species in the genus Octonoba Oncoba spinosa, a flowering plant species Onigocia spinosa, a fish species in the genus Onigocia Ononis spinosa, a medicinal plant species Ophellantha spinosa, a plant species in the genus Ophellantha Opopaea spinosa, a spider species in the genus Opopaea and the family Oonopidae Ovalia spinosa, a harvestman species in the genus Ovalia
See also Spinosa (disambiguation)