穗莼属（拉丁语学名：Cabomba）是莼菜科中的一个属。

穗莼属植物常被用作鱼缸植物。

穗莼属植物有非常细的、分支的叶子，类似水毛茛和弧尾藻属植物。花很小，有三片萼片、三片白色或黄色的花瓣和三至六根雄蕊。

Cabomba is an aquatic plant genus, one of two belonging to the family Cabombaceae. It has divided submerged leaves in the shape of a fan (hence the vernacular name fanwort) and is much favoured by aquarists as an ornamental and oxygenating plant for fishtanks. Use in the aquarium trade has led to some species being introduced to parts of the world, such as Australia, where they have become pestilential weeds.