The meridian 57° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Atlantic Ocean, South America, the Southern Ocean, and Antarctica to the South Pole.
The 57th meridian west forms a great circle with the 123rd meridian east.
Starting at the North Pole and heading south to the South Pole, the 57th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Lincoln Sea | ||
| Nyeboe Land | ||
| Baffin Bay | ||
| Baffin Bay | ||
| Davis Strait | ||
| Atlantic Ocean | Labrador Sea | |
| Newfoundland and Labrador — Labrador | ||
| Strait of Belle Isle | ||
| Newfoundland and Labrador — island of Newfoundland | ||
| Atlantic Ocean | ||
| Area claimed by | ||
| Pará Amazonas — from Pará — from Mato Grosso — from Mato Grosso do Sul — from | ||
| Río de la Plata | ||
| Atlantic Ocean | ||
| Southern Ocean | ||
| Antarctica | Antarctic Peninsula — claimed by, and | |
| Southern Ocean | Weddell Sea — passing just east of Vega Island (at) and James Ross Island (at), Antarctica | |
| Antarctica | Snow Hill Island — claimed by, and | |
| Southern Ocean | Weddell Sea | |
| Antarctica | Territory claimed by, and | |