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The Fitzwilliam Strait (76°30′N 116°0′W / 76.500°N 116.000°W / 76.500; -116.000) is a natural waterway through the central Canadian Arctic Archipelago in the Northwest Territories of Canada. It separates Prince Patrick Island (to the north-west), Melville Island (to the south-east) and Emerald Isle (to the north-east). It opens into the Kellett Strait to the south-west.

v t e Hydrography of the Northwest Territories
Rivers	Arctic Red Back Coppermine Fond du Lac Great Bear Hay Horn Hornaday Kagloryuak Keele Kotaneelee Liard Mackenzie North Nahanni Peel Petitot Redstone Roscoe Slave South Nahanni Trout Yellowknife more...
Lakes	Artillery Aylmer Blackwater Boyd Buffalo Clinton-Colden Colville Faber Firedrake Frame Great Bear Great Slave Hottah Howard Kakisa Kasba Keller Lac Belot Lac de Gras Lac des Bois (Northwest Territories) Lac La Martre Lynx MacKay McArthur Mosquito Napaktulik Nonacho Point Sambaa K'e Selwyn Snowbird Tahiryuak Tathlina Tulemalu Wholdaia more...
Coastal features	Amundsen Gulf Beaufort Sea Dolphin and Union Strait Fitzwilliam Strait Hazen Strait Husky Lakes Kellett Strait Liddon Gulf M'Clure Strait Minto Inlet Murray Inlet Prince of Wales Strait Richard Collinson Inlet Prince Albert Sound Wilkins Strait

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