The Canadian Tiger Swallowtail (Papilio canadensis) is a species of swallowtail butterfly of the family Papilionidae. It is native throughout most of Canada, narrowly reaching northern portions of the United States. Formerly treated as a subspecies of the eastern tiger swallowtail (P. glaucus), it was given full species status in 1991. The two species are known to hybridize where their ranges meet in the Northeastern United States and Southern Ontario.
The wings of Canadian tiger swallowtails are light yellow with a thick black border marked with red and blue spots. It is characterized by black stripes similar to those of a tiger. The young caterpillar is green with a yellow band across the body. Above the pinkish head are two false eyes, a trait that makes it appear more threatening to predators. As the caterpillar gets older, its color changes to brown and white to mimic the appearance of bird droppings.