- Source: Ruizia (disambiguation)
Ruizia may refer to:
Ruizia, a genus of plants in the family Malvaceae
Ruizia, a synonym of Peumus, a genus of plants in the family Monimiaceae
Ruizia, synonym of Rhigonema, a genus of nematodes in the family Rhigonematidae
Ruizia, a publication of the Royal Botanical Garden of Madrid