Xylosma crenata, the sawtooth logwood, is a species of flowering plant in the family Salicaceae.
It is endemic to the island of Kauai in Hawaii. It is a tree, reaching a height of .
Sawtooth logwood inhabits montane mesic forests dominated by koa (Acacia koa) and à Âhia lehua (Metrosideros polymorpha) at an elevations of .
It is threatened by habitat loss.