薄荚豆属（学名：Lonchocarpus）是豆科 蝶形花亚科的一个属。

Lonchocarpus is a plant genus in the legume family (Fabaceae). The species are called lancepods due to their fruit resembling an ornate lance tip or a few beads on a string.

Cubé resin is produced from the roots of L. urucu and namely ''L. utilis (cubé). It contains enough of the toxic rotenoids rotenone and deguelin to be used as an insecticide and piscicide. As these are naturally occurring compounds, they were formerly used in organic farming. Since it is highly unselective and kills useful, as well as pest, animals, it is considered harmful to the environment today. Also, chronic exposure to rotenone and deguelin seems to increase the risk of Parkinson's disease even in mammals, for which these compounds are less acutely toxic than for fish and insects. On the other hand, deguelin might be useful in cancer therapy if it can be applied directly into tumors, and Lonchocarpus root is used to a probably insignificant extent by indigenous peoples as an aid in fishing, e.g. by the Nukak who call it nuún.