The meridian 8° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, the Atlantic Ocean, Europe, Africa, the Southern Ocean, and Antarctica to the South Pole.
The 8th meridian west forms a great circle with the 172nd meridian east.
Starting at the North Pole and heading south to the South Pole, the 8th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Atlantic Ocean | ||
| Island of Jan Mayen | ||
| Atlantic Ocean | Passing just west of the island of Mykines, (at) Passing just west of the Monach Islands, Scotland, (at) Passing just west of the island of Mingulay, Scotland, (at) | |
| Northern Ireland | ||
| Passing just west of Athlone (at) | ||
| Atlantic Ocean | ||
| Cedeira (province of A Coruña) | ||
| Montalegre (Vila Real District) | ||
| Atlantic Ocean | ||
| Passing through Marrakesh (at) | ||
| Passing through Bamako (at) | ||
| For about 3 km | ||
| For about 9 km | ||
| For about 6 km | ||
| Atlantic Ocean | ||
| Southern Ocean | ||
| Antarctica | Queen Maud Land, claimed by | |
The Irish grid reference system uses the point 53.5°N -8°W as its true origin.[1]