The Christmas Mountains are a series of rounded peaks in northern New Brunswick, Canada, at the headwaters of North Pole Stream and the Little Southwest Miramichi River, west of Big Bald Mountain, and south of Mount Carleton. The mountains, in part, separate the Miramichi River watershed from the watersheds of the Serpentine River and the Nepisiguit River.

The Miramichi River is a river located in the east-central part of New Brunswick, Canada. The river drains into Miramichi Bay in the Gulf of St. Lawrence. The name may have been derived from the Montagnais words "Maissimeu Assi", and it is today the namesake of the Miramichi Herald at the Canadian Heraldic Authority.