Catoxantha opulenta is a species of jewel beetle belonging to the family Buprestidae, subfamily Chrysochroinae.
Catoxantha opulenta can reach a length of about . This beautiful and quite common jewel beetle has metallic dark bluish-green elytra with thick and prominent black costae and two yellow transverse bands. Abdominal sternum is yellow. It bores the wood of Chukrasia velutina and Lagerstroemia speciosa. The life-cycle is annual. Adults emerge in June.
This beetle is present in Thailand, Malaysia, western Indonesia and Philippines.