香椿属（学名：Toona）是楝科下的一属，分布于亚洲和大洋洲大部分地区。

Toona, commonly known as redcedar, toon (also spelled tun) or toona, is a genus in the mahogany family, Meliaceae, native from Afghanistan south to India, and east to North Korea, Papua New Guinea and eastern Australia. In older texts, the genus was often incorporated within a wider circumscription of the related genus Cedrela, but that genus is now restricted to species from the Americas.