| Named By: | William Arthur Parks in 1925 |
| Time Period: | Early Maastrichtian, 70.6-70 Ma |
| Location: | Canada, Alberta - Horseshoe Canyon Formation |
| Size: | Uncertain due to lack of post cranial remains |
| Diet: | Herbivore |
| Fossil(s): | Partial skull |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Ceratopsia | Ceratopsidae | Chasmosaurinae | |
Arrhinoceratops (meaning "no nose-horn face", derived from the Ancient Greek "a-/a-" "no", rhis/Ris "nose" "keras/keras" "horn", "-ops/ops" "face") is a genus of herbivorous ceratopsian dinosaur. The name was coined as its original describer concluded it was special because the nose-horn was not a separate bone, however further analysis revealed this was based on a misunderstanding. It lived during the latest Campanian/earliest Maastrichtian stage of the Late Cretaceous, predating its famous relative Triceratops by a few million years, although it was contemporary with Anchiceratops. Its remains have been found in Canada.