Sweet grass or sweetgrass may refer to:
Plants Hierochloe odorata (sweet grass or holy grass), from northern North America and Eurasia Sweet-grass or mannagrass, any of the many species in the genus Glyceria Anthoxanthum odoratum, Sweet vernal grass, native to Eurasia Muhlenbergia sericea, synonym Muhlenbergia filipes, native to the southeastern United States colloquially for Cannabis, a psychoactive plant Sheath grass belongs to the genus Coleanthus in the sweet grass family
Places Sweet Grass, Montana, United States Sweetgrass–Coutts Border Crossing, a major border crossing between Alberta and Montana Sweet Grass County, Montana, United States Sweet Grass Creek, Montana, United States Sweet Grass Hills, Montana, United States Sweet Grass, Edmonton, Canada Sweetgrass First Nation, Saskatchewan, Canada
Other uses Sweet Grass (Cree chief) (1815–1877) Sweetgrass (film), a 2009 documentary