The Falkland Steamerduck, Tachyeres brachypterus, is a duck native to the Falkland Islands in the southern Atlantic Ocean. It is one of only two bird species to be endemic to the Falkland Islands (Islas Malvinas in Spanish), the other being Cobb's Wren.

The Falkland Steamerduck's wings are very short (hence the scientific name: brachy = "short", and pteron = "wing"), and it is incapable of flight. The plumage of the Falkland Steamerduck is mostly dark grey, but with a white stripe behind the eye. It is very difficult to distinguish from the Flying Steamer Duck in the field since they occupy the same habitat and, although the Flying Steamer Duck can fly, it rarely does.