Radermachera is a genus of about 17 species of flowering plants in the family Bignoniaceae, native to southeastern Asia. They are evergreen trees reaching 5-40 m tall, with bipinnate or tripinnate leaves, and panicles of large bell-shaped, white, pink, pale purple or yellow flowers 5-7 cm diameter. The genus is named after Jacob Cornelis Matthieu Radermacher, the 18th century Dutch naturalist who cataloged much of the flora of Java and Sumatra.