Sirmilik National Park is a protected area located in Qikiqtaaluk, Nunavut, Canada. It was established in 2001. Situated within the Arctic Cordillera, it is composed of three areas: most of Bylot Island with the exception for a few areas that are Inuit-owned lands, Oliver Sound, and Baffin Island's Borden Peninsula. Much of the park is bordered by water.
Geographically, it is representative of the Northern Eastern Arctic Lowlands Natural Region as well as parts of the Lancaster Sound Marine Region. Sirmilik is part of the National parks of Canada.