Salomonia cantoniensis is a species of flowering plant belonging to the family Polygalaceae. It is an annual erect herb seen in grassy areas, open areas in primary and secondary forests and along roads and paths.
It is native to Assam, Bangladesh, Borneo, Cambodia, the Caroline Islands, South-Central and Southeast China, East and West Himalaya, India, Java, Laos, the Lesser Sunda Islands, Malaysia, the Maluku Islands, Myanmar, Nepal, New Guinea, the Nicobar Islands, the Philippines, Sulawesi, Sumatra, Thailand, and Vietnam (type).