Rhododendron kaempferi, the torch azalea or Kaempferi azalea, is a species of flowering plant in the family Ericaceae. It is native to Japan. A semi-evergreen shrub, its 'Orange King' cultivar has gained the Royal Horticultural Society's Award of Garden Merit. There are a number of other cultivars available with a variety of flower colors.
Subtaxa The following varieties are accepted: Rhododendron kaempferi var. iyoense Rhododendron kaempferi var. kaempferi – Honshu, Kyushu Rhododendron kaempferi var. lusidusculum Rhododendron kaempferi var. macrogemmum – Izu Peninsula, Izu Islands Rhododendron kaempferi var. mikawanum – Aichi Prefecture Rhododendron kaempferi var. saikaiense – Kyushu Rhododendron kaempferi var. tubiflorum – western Honshu
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