* Hawks: Cooper's hawks and sharp-shinned hawks are two of the most common hawks that prey on blue jays.
* Falcons: Peregrine falcons and Merlin falcons are two of the most common falcons that prey on blue jays.
* Crows: Crows are known to eat blue jay eggs and nestlings.
* Raccoons: Raccoons are known to raid blue jay nests for eggs and nestlings.
* Snakes: Snakes, such as black rat snakes and bullsnakes, are known to eat blue jays.
* Cats: Domestic cats are a significant source of mortality for blue jays, especially in urban areas.