Bicyclus milyas, the Lesser Rock Bush Brown, is a butterfly in the Nymphalidae family. It is found in Senegal, Gambia, Guinea-Bissau, Mali, Guinea, Burkina Faso, northern Sierra Leone, northern Ivory Coast, northern Ghana, northern Togo, northern Benin, northern Nigeria, the northern part of the Democratic Republic of Congo, Sudan, northern Uganda, south-western Ethiopia and Kenya. The habitat consists of dry savanna. The larvae feed on Imperata cylindrica and Pennisetum purpureum.