马钱属（学名：Strychnos）是马钱科下的一个属，为灌木或乔木植物。该属共有约200种，分布于热带和亚热带地区。

Strychnos is a genus of flowering plants, belonging to family Loganiaceae (sometimes Strychnaceae). The genus includes about 100 accepted species of trees and lianas, and more than 200 that are as yet unresolved. The genus is widely distributed around the world's tropics. The genus is noted for the presence of poisonous indole alkaloids in the roots, stems and leaves of the plant. Among the alkaloids are strychnine and curare.