Cantao is a genus of true bugs in family Scutelleridae and tribe Scutellerini.
Body elongate oval; head elongate, with nearly straight and carinate lateral margins; pronotum with posterolateral angles produced at base of scutellum; scutellum with a pair of deep foveae basally; peritreme large, occupying most of metapleurite, evaporatorium reduced.
Distributed in Indomalaya, Wallacea, New Guinea and Australia. A doubtful species (Cantao africanus) has been reported from tropical Africa. A fossil species (tentatively placed into Cantao) was described from the middle Miocene of Tottori Prefecture, Honshu, Japan.
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