刺桐属（学名：Erythrina）是蝶形花科下的一个属，为乔木或灌木植物。该属共有约200种，分布于全球的热带和亚热带地区。

Erythrina /ˌɛrᵻˈθraɪnə/ is a genus of flowering plants in the pea family, Fabaceae. It contains about 130 species, which are distributed in tropical and subtropical regions worldwide. They are trees, growing up to 30 m (98 ft) in height. The generic name is derived from the Greek word ερυθρóς (erythros), meaning "red," referring to the flower color of certain species.