A Klondike bar is a Good Humor-Breyers ice cream novelty consisting of a square of ice cream coated with a thin layer of chocolate.

The Klondike bar was created by the Isaly Dairy Company of Mansfield, Ohio in the early 1920s and named after the Klondike River of Yukon, Canada. Rights to the name were eventually sold to Good Humor-Breyers, a division of Unilever.

The first recorded advertisement for the Klondike was on February 5, 1922, in the Youngstown Vindicator. The bars are generally wrapped with a silver-colored wrapper depicting a polar bear mascot for the brand. Unlike a traditional frozen ice pop, or traditional ice cream bar, the Klondike bar does not have a stick due to its size, a point often touted in advertising.

In 1976, Henry Clarke, owner of the Clabir company, purchased the rights to the Klondike bar, which had been manufactured and sold by the Isaly’s restaurant chain since the 1930s. Clarke introduced Klondike bars to consumers throughout the United States during the 1980s. Under Clarke, sales of the Klondike bar increased from $800,000 annually at the time of the 1976 acquisition by Clabir to more than $60 million.