The Florida panther is an endangered subspecies of cougar (Puma concolor) that lives in forests and swamps of southern Florida in the United States. Its current taxonomic status (Puma concolor coryi or Puma concolor couguar) is unresolved, but recent genetic research alone does not alter the legal conservation status. This species is also known as the cougar, mountain lion, puma, and catamount; but in the southeastern United States and particularly Florida, it is exclusively known as the panther.

Males can weigh up to 160 pounds (73 kg) and live within a range that includes the Big Cypress National Preserve, Everglades National Park, and the Florida Panther National Wildlife Refuge. This population, the only unequivocal cougar representative in the eastern United States, currently occupies 5% of its historic range. In the 1970s, there were an estimated 20 Florida panthers in the wild, and their numbers have increased to an estimated 100 to 160 as of 2011.

In 1982, the Florida panther was chosen as the Florida state animal.