桃花心木属（学名：Swietenia）是楝科下的一个属，为乔木植物。该属共有7－8种，分布于美洲热带和亚热带地区和西非等地。

Swietenia is a genus of trees in the chinaberry family, Meliaceae. It occurs natively in the Neotropics, from southern Florida, the Caribbean, Mexico and Central America south to Bolivia. The genus is named for Dutch-Austrian physician Gerard van Swieten (1700-1772). The wood of Swietenia trees is known as mahogany.