酸模树（Oxydendrum arboreum），（英文：Sourwood或Sorrel Tree）是小树或大灌木，多在美洲东北生长。酸模树属只有一个类，被命名为Oxydendrum。

酸模树长于阿巴拉契亚山脉山麓处。酸模树花蜜最出名，是最顶级的蜂蜜。

Sourwood or sorrel tree, Oxydendrum arboreum, /ˌɒksᵻˈdɛndrəm ɑːrˈbɔəriəm/ is the sole species in the genus Oxydendrum, in the family Ericaceae. It is native to eastern North America, from southern Pennsylvania south to northwest Florida and west to southern Illinois; it is most common in the lower chain of the Appalachian Mountains. The tree is frequently seen as a component of oak-heath forests.