Wolf River is an American cultivar of domesticated apple, which originates from the shores of the Wolf River of Wisconsin, in the United States of America, known since 1875.

[1] The tree is exceptionally frost hardy and generally disease resistant.

The fruit usually ripens mid-September to early October.

[2] It is large, commonly weighing over a pound,[3][2][4] and fairly sweet with a distinctive red and yellow appearance.

[3] Wolf River has been described as a world-class apple butter apple, which has long been praised for the rich, fluffy apple butter it provides after hours of slow cooking.