The meridian 16° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Greenland, Iceland, the Atlantic Ocean, Africa, the Southern Ocean, and Antarctica to the South Pole.
The 16th meridian west forms a great circle with the 164th meridian east.
Starting at the North Pole and heading south to the South Pole, the 16th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Atlantic Ocean | Greenland Sea | |
| Atlantic Ocean | Passing just east of Porto Santo Island, (at) Passing just west of Selvagem Grande Island, (at) Passing just east of Selvagem Pequena Island, (at) Passing just east of the islands of Tenerife, (at) Passing just west of the island of Gran Canaria, (at) | |
| Western Sahara | Dakhla peninsula — claimed by | |
| Atlantic Ocean | ||
| Western Sahara | Claimed by | |
| Passing through Nouakchott (at) | ||
| Mainland and Ilha de Pecixe | ||
| Atlantic Ocean | ||
| Bissagos Islands | ||
| Atlantic Ocean | ||
| Southern Ocean | ||
| Antarctica | Queen Maud Land, claimed by | |