Danthonia is a genus of Eurasian, North African, and American plants in the grass family. Members of this genus are sometimes referred to as oatgrass, but that common name is not restricted to this genus. Other common names include heathgrass and wallaby grass. Australian species have since been reclassified into the genus Rytidosperma.

A number of species which were formerly classified under Danthonia are now included in Amphibromus, Astrebla, Chionochloa, Joycea, Karroochloa, Monachather, Merxmuellera, Notodanthonia, Plinthanthesis, Rytidosperma or Schismus.