The meridian 28° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Greenland, the Atlantic Ocean, the Azores, the Southern Ocean, and Antarctica to the South Pole.
The 28th meridian west forms a great circle with the 152nd meridian east.
In Antarctica the meridian defines the eastern limit of Brazil's unofficial territorial claim.
Starting at the North Pole and heading south to the South Pole, the 28th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Greenland | Northern Peary Land | |
| Frederick E. Hyde Fjord | ||
| Greenland | Southern Peary Land | |
| Independence Fjord | ||
| Greenland | Mainland, the island of Milne Land and the mainland again | |
| Atlantic Ocean | ||
| Portugal | Island of Graciosa | |
| Atlantic Ocean | ||
| Portugal | Island of São Jorge | |
| Atlantic Ocean | Passing just east of Pico Island, Portugal Passing just east of Leskov Island, South Georgia and the South Sandwich Islands |
|
| Southern Ocean | ||
| Antarctica | Claimed by both Argentina (Argentine Antarctica) and United Kingdom (British Antarctic Territory) |
|
|||||