Jamesia is a genus of shrubs in the Hydrangeaceae, most commonly known as Jamesia, Cliffbush or Waxflower. It is native to interior western North America, in the U.S. states of Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming, growing in mountains at 1600 to 3000 m altitude.

There is just one species, J. americana, though some botanists treat it as two species, the second being J. tetrapetala (Fourpetal Cliffbush, with the narrow sense J. americana then known as Fivepetal Cliffbush). Jamesia americana is an excellent choice for dry conditions. Intensely fragrant and showy clusters of waxy, white flowers appear in late spring on this shrub, with the added interest of flaking, reddish-brown bark. Heavy-textured, green foliage transforms to brilliant orange and pink tones in the autumn. This West American native adds winter interest with its silvery silhouette. It requires well-drained loam or gravelly soil.