牛膝菊属（学名：Galinsoga）是菊科下的一个属，为一年生草本植物。该属共有5种，分布于热带美洲。

Galinsoga is a genus of flowering plants in the family Asteraceae. It is native to North and South America and the West Indies, and naturalized in Europe, Asia, Africa, and Australia.

The name Galinsoga was dedicated to Ignacio Mariano Martinez de Galinsoga, who founded the Spanish Real Academia Nacional de Medicina and was director of the Real Jardín Botánico de Madrid.