Sick Heart River (1941) is a novel by Scottish author John Buchan set in Canada.

While he is deciding how to spend his remaining days, an American associate, John S. Blenkiron, requests help to find his niece's husband, Francis Galliard, who has disappeared from his very successful financial career in New York and fled to Canada.

During this he finds a mountain meadow he had seen on a trip thirty years earlier and which has stayed in his memory since.

[2][3] Buchan wrote this while Governor General of Canada and Chancellor of the University of Edinburgh.

The area was only just being mapped when Buchan, as Governor-General Lord Tweedsmuir, passed nearby during his voyage down the Mackenzie River in the summer of 1937.