Zapsalis is a genus of dromaeosaurine theropod dinosaurs. It is a tooth taxon, often considered dubious because of the fragmentary nature of the fossils, which include teeth but no other remains. The type species is Zapsalis abradens, from the Judith River Formation of Montana, dating to 75 million years ago, during the Campanian stage. Additional teeth attributed to Z. abradens have been found in the Dinosaur Park Formation, also dated to about 75 Ma ago. While Zapsalis-like teeth have been found in other formations dating to various time periods and assigned to this genus, they most likely belong to new genera and species.