Triopticus is a genus of archosauriform reptile from the Late Triassic of Texas, United States.

The backmost pair of bosses form a thick shelf that stretches outwards and backwards over the rear end of the skull, comparable to the domes of pachycephalosaurs and the frills of ceratopsians.

It was discovered in Quarry 3 of the Otis Chalk in Howard County, Texas, which is part of the Dockum Group.

[1] The genus name of Triopticus is derived from the Latin tri ("three") and optic ("vision"), in reference to a large pit in the back of the skull reminiscent of a third eye socket.

The phylogenetic tree recovered by the analysis, reproduced below, found Triopticus in a polytomy with other basal archosauriforms.

[1] Protorosaurus speneri Tanystropheidae Rhynchosauria Pamelaria dolichotrachela Azendohsauridae Trilophosauridae Prolacerta broomi "Chasmatosaurus" yuani Proterosuchus Triopticus primus Erythrosuchus africanus Euparkeria capensis Chanaresuchus bonapartei Batrachotomus kupferzellensis Dinosauria In the Otis Chalk assemblage, Triopticus lived alongside a number of other archosauriforms including the allokotosaurs Trilophosaurus and Malerisaurus; the doswelliid Doswellia; the phytosaurs Parasuchus and Angistorhinus; the aetosaurs Longosuchus, Lucasuchus, and Coahomasuchus; the shuvosaurid Effigia; the silesaurid Silesaurus; the lagerpetid dinosauromorph Dromomeron, and the coelophysoid theropod dinosaur Lepidus.