Tetraplasandra is an obsolete genus of flowering plants in the ivy family, Araliaceae. They are small to medium trees, (rarely shrubs or large trees) of mesic to wet forests. Some authors have recognized as many as 19 species in Tetraplasandra, while others have recognized as few as six. In 2007, the authors of a scientific paper recommended that the genus be divided into nine species. In 2010, all of these nine species were included in ''Polyscias'' subgenus Tetraplasandra, a subgenus of 21 species in the large genus Polyscias, which will comprise about 250 species, when about 90 undescribed species are published.