| Named By: | Nicholas R. Longrich, Ken Barnes, Scott Clark & Larry Millar in 2013 |
| Time Period: | Late Cretaceous, 75 Ma |
| Location: | Canada, Alberta - Dinosaur Park Formation. USA, Texas - Aguja Formation |
| Size: | Details unavailable |
| Diet: | Ominvore |
| Fossil(s): | Remains of a few individuals |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Theropoda | Oviraptorosauria | Caenagnathoidea | Caenagnathidae | Caenagnathinae | |
| Also known as: | | Ornithomimus elegans | |
Leptorhynchos is an extinct genus of caenagnathid dinosaurs known from the Late Cretaceous Dinosaur Park, Hell Creek and Aguja Formations of west Texas and Montana, United States and southern Alberta, Canada. It lived about 75 to 66 million years ago.