Northern Hemisphere Swans
- Mute Swan (Cygnus olor) and Polish Mute Swan (Cygnus immutabilis)
- Trumpeter Swan (Cygnus buccinator or Olor buccinator)
- Whooper Swan (Cygnus cygnus or Cygnus musicus)
- Whistling Tundra Swan (Cygnus columbianus or Olor columbianus)
- Bewick’s/Jankowski’s Tundra Swan (Cygnus columbianus bewickii/jankowski or Olor columbianus bewickii/jankowski)
Southern Hemisphere Swans
- Black Swan (Cygnus atratus or Chenopis atratus)
- Black-necked Swan (Cygnus melancoryphus or Sthenelides melancoryphus)
- Coscoroba Swan (Coscoroba coscoroba)
Extinct Swans