Sachs Harbour (/sæks/ SAKS; Inuinnaqtun: Ikaahuk) is a hamlet located in the Inuvik Region of the Northwest Territories, Canada.

Situated on the southwestern coast of Banks Island in the Inuvialuit Settlement Region, the population according to the 2021 census count was 104 people.

The pre-Dorset sites were later replaced by archaeological cultures showing Eastern and Western Arctic Dorset characteristics in the southern parts of the island.

It is of historical significance for the Investigator, one of a number of ships sent out to the Arctic by the Admiralty to find the lost expedition of John Franklin.

The Investigator, captained by Commander Robert McClure, became trapped in the ice in the bay for some three years and had to be abandoned by its crew.

The Investigator sailed from England South America so that it passed through the Bering Strait in an attempt to find the Northwest Passage from the west while looking for Franklin's lost expedition.

[2] Services include a two-member Royal Canadian Mounted Police detachment and a health centre with one nurse.

Bulk supplies of food and other items are brought by barge in the summer months and flights from Inuvik, some 523 km (325 mi) to the southwest, operate all year, via the Sachs Harbour (David Nasogaluak Jr. Saaryuaq) Airport.

Since the climate has been changing, sea ice has been breaking up earlier than normal, taking seals farther south in the summer.