The Anchieta's ridged frog or plain grass frog (Ptychadena anchietae) is a species of frog in the Ptychadenidae family. It is found in Angola, Botswana, Republic of the Congo, Democratic Republic of the Congo, Djibouti, Eritrea, Ethiopia, Kenya, Malawi, Mozambique, Namibia, Somalia, South Africa, Sudan, Swaziland, Tanzania, Uganda, Zambia, Zimbabwe, possibly Burundi, and possibly Rwanda. Its natural habitats are subtropical or tropical moist lowland forests, subtropica