笔花豆属（学名：Stylosanthes）是蝶形花科下的一个属，为多年生草本植物。该属共有约50种，分布于亚洲、非洲和美洲的热带、亚热带地区。

Stylosanthes is a genus of flowering plants in the legume family, Fabaceae and contains numerous highly important pasture and forage species. It was recently assigned to the informal monophyletic Pterocarpus clade of the Dalbergieae. The common name pencilflower is sometimes used for plants in this genus.