The meridian 64° 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 64th meridian west forms a great circle with the 116th meridian east.
Starting at the North Pole and heading south to the South Pole, the 64th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Lincoln Sea | ||
| Nunavut — Ellesmere Island | ||
| Nares Strait | ||
| Daugaard-Jensen Land | ||
| Baffin Bay | ||
| Davis Strait | ||
| Nunavut — Qikiqtarjuaq Island and Baffin Island | ||
| Davis Strait | ||
| Nunavut — Lemieux Islands | ||
| Davis Strait | ||
| Atlantic Ocean | Labrador Sea | |
| Newfoundland and Labrador — Labrador Quebec — from Newfoundland and Labrador — Labrador, from Quebec — from Newfoundland and Labrador — Labrador, from Quebec — from Newfoundland and Labrador — Labrador, from Quebec — from Newfoundland and Labrador — Labrador, from Quebec — from Newfoundland and Labrador — Labrador, from Quebec — from Newfoundland and Labrador — Labrador, from Quebec — from Newfoundland and Labrador — Labrador, from Quebec — from | ||
| Gulf of Saint Lawrence | Jacques Cartier Strait | |
| Quebec — Anticosti Island | ||
| Gulf of Saint Lawrence | ||
| Prince Edward Island | ||
| Gulf of Saint Lawrence | Northumberland Strait | |
| New Brunswick Nova Scotia — from | ||
| Atlantic Ocean | ||
| Caribbean Sea | Passing just west of Isla Aves — claimed by and (at) | |
| Isla Margarita and mainland | ||
| Roraima | ||
| Amazonas Rondônia — from | ||
| Atlantic Ocean | San Matías Gulf | |
| Valdes Peninsula | ||
| Atlantic Ocean | ||
| Isla de los Estados | ||
| Atlantic Ocean | ||
| Southern Ocean | ||
| Antarctica | Anvers Island — claimed by, and | |
| Southern Ocean | ||
| Antarctica | Claimed by, and | |