千金子属（学名：Leptochloa）是禾本科下的一个属，为一年生、直立、簇生草本植物。该属共有20种，分布于热带和亚热带地区。

Leptochloa is a widespread genus of Asian, African, Australian, and American plants in the grass family.

Members of the genus are commonly known as sprangletops.

The generic name is derived from the Greek words ληπτος (leptos), meaning "thin," and χλοα (chloa), meaning "grass," referring to the inflorescences.