Graphium ridleyanus, the acraea swordtail, is a butterfly in the family Papilionidae (swallowtails). It is found in eastern Nigeria, Cameroon, Equatorial Guinea, Sao Tome and Principe, Gabon, the Republic of the Congo, Angola, the Central African Republic, the Democratic Republic of the Congo, Chad, southern Sudan, Uganda, Rwanda, Burundi, western Tanzania and Zambia. Its habitat consists of the forest/savanna transition zone. Adults mimic large brush-footed butterflies of the Acraea genus, such as Acraea egina and Acraea perenna. Males are known to mud-puddle.