鸭嘴草属（学名：Ischaemum）是禾本科下的一个属，为一年生或多年生草本植物。该属共有约50种，主要产自热带和亚热带地区。

Ischaemum is a genus of plants in the grass family, widespread in tropical and semitropical regions in many countries. Many species are known commonly as murainagrass.

numerous species now regarded as better suited to other genera: Andropogon Andropterum Apocopis Arundinella Bothriochloa Coelorachis Crypsis Echinochloa Eremochloa Eulaliopsis Kerriochloa Lasiurus Manisuris Microstegium Phacelurus Pogonatherum Polytrias Rhytachne Rottboellia Sehima Stenotaphrum Thuarea Triplopogon Tripsacum Vossia