Albizia julibrissin, the Persian silk tree, pink silk tree, or mimosa tree, is a species of tree in the family Fabaceae, native to southwestern Asia and eastern Asia.

Albizia is a genus of more than 160 species of mostly fast-growing subtropical and tropical trees and shrubs in the subfamily Mimosoideae of the family Fabaceae. The genus is pantropical, occurring in Asia, Africa, Madagascar, America and Australia, but mostly in the Old World tropics. In some locations, some species are considered weeds.