Derambila saponaria is a moth of the family Geometridae first described by Achille Guenée in 1858. It is found in Sri Lanka, India, Sumatra and Borneo.
Prominent black dots are found along the wing margins. The Taiwan population is sometimes classified as a subspecies - Derambila saponaria fragilis <small>Butler, 1880</small> or as a separate species - Derambila fragilis <small>(Butler, 1880)</small>.