George Washington Carmack was an American prospector in the Yukon. He was originally credited with registering Discovery Claim, the discovery of gold that set off the Klondike Gold Rush on August 16, 1896. Today, historians usually give the credit to his Tagish brother-in-law, Skookum Jim Mason.

The Klondike Gold Rush was a migration by an estimated 100,000 prospectors to the Klondike region of Yukon, in north-western Canada, between 1896 and 1899. Gold was discovered there by local miners on August 16, 1896; when news reached Seattle and San Francisco the following year, it triggered a stampede of prospectors. Some became wealthy, but the majority went in vain. It has been immortalized in films, literature, and photographs.