Crittendenceratops (meaning "horned face from the Fort Crittenden Formation") is a genus of horned centrosaurine ceratopsid dinosaur from the late Campanian Fort Crittenden Formation of Arizona.

Crittendenceratops is distinguished by forward-curving, hook-like flanges located along the central portion of the top of the frill, "extensive" epiparietals located along the sides of the parietal portion of the frill, a thickening of the frill in the parietal portion, and a short, pronounced ridge on the surface of the squamosal portion of the frill.

[1] Crittendenceratops was assigned to the Nasutoceratopsini (which also includes Avaceratops, Nasutoceratops, and Yehuecauhceratops), a tribe of the ceratopsid subfamily Centrosaurinae, by Dalman et al. (2018).

The cladogram below follows their phylogenetic analysis:[1] Diabloceratops eatoni Yehuecauhceratops mudei Nasutoceratops titusi Avaceratops lammersi

Crittendenceratops krzyzanowskii 'Malta centrosaurine' Albertaceratops nesmoi Medusaceratops lokii Sinoceratops zhuchengensis Wendiceratops pinhornensis Machairoceratops cronusi Einiosaurus procurvicornis Achelousaurus horneri Pachyrhinosaurus perotorum Pachyrhinosaurus lakustai Pachyrhinosaurus canadensis Coronosaurus brinkmani Xenoceratops foremostensis Spinops sternbergorum Centrosaurus apertus Rubeosaurus ovatus Styracosaurus albertensis