What are the natural predators of the Mink?

Natural predators of mink are coyotes, wolves, bears, great horned owls, and bobcats. Otters have also been known to kill mink, but another HUGE predator of mink is mankind; for the fur.

Coyote, bobcat, horned owl.

American Mink - Minks have few natural enemies and are occasionally killed by coyotes, bobcats and other carnivores. Minks being like most mustelids, are aggressive and fearless predators and will not hesitate to defend themselves against animals larger than themselves. Mink may be occasionally taken by Birds of Prey, or young in a nest may be taken by snakes.

Here in the UK mink do not have any predators