William Baffin was an English navigator, explorer and cartographer. He is primarily known for his attempt to find a Northwest Passage from the Atlantic to the Pacific, during the course of which he was the first European to discover Baffin Bay situated between Canada and Greenland. He was also responsible for exceptional surveys of the Red Sea and Persian Gulf on behalf of the East India Company.

The Northwest Passage (NWP) is the sea lane between the Atlantic and Pacific oceans through the Arctic Ocean, along the northern coast of North America via waterways through the Arctic Archipelago of Canada. The eastern route along the Arctic coasts of Norway and Siberia is accordingly called the Northeast Passage (NEP). The various islands of the archipelago are separated from one another and from Mainland Canada by a series of Arctic waterways collectively known as the Northwest Passages, Northwestern Passages or the Canadian Internal Waters.