A revision is presented of the four genera of the SE Asian Chionachninae Clayton (Gramineae: Andropogoneae). Twelve species are recognised: nine (with two new combinations) in Chionachne R. Br. (incl. Sclerachne R. Br.) with an emended circumscription, one in the reinstated Cyathorhachis Nees ex Steud., one in Polytoca R.Br., and one in Trilobachne M. Schenck ex Henrard.