The meridian 155° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.
The 155th meridian west forms a great circle with the 25th meridian east.
Starting at the North Pole and heading south to the South Pole, the 155th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes | |
|---|---|---|---|
| Arctic Ocean | |||
| Beaufort Sea | |||
| Alaska | |||
| Pacific Ocean | Passing just west of Kodiak Island, Alaska, (at) Passing just west of Tugidak Island, Alaska, (at) | ||
| Hawaii — Hawaii island | |||
| Pacific Ocean | Passing just west of Malden Island, (at) | ||
| Southern Ocean | |||
| Antarctica | Ross Dependency, claimed by |