The meridian 174° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.
The 174th meridian west forms a great circle with the 6th meridian east.
Starting at the North Pole and heading south to the South Pole, the 174th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Chukchi Sea | ||
| Chukotka Autonomous Okrug — Chukchi Peninsula | ||
| Kolyuchinskaya Bay | ||
| Chukotka Autonomous Okrug — Chukchi Peninsula | ||
| Bering Sea | ||
| Alaska — Atka Island and Amlia Island | ||
| Pacific Ocean | Passing just west of Lisianski Island, Hawaii, (at) Passing just west of the island of Niuatoputapu, (at) Passing just east of the island of Toku, (at) | |
| Islands of Vavaʻu | ||
| Pacific Ocean | ||
| Southern Ocean | ||
| Antarctica | Ross Dependency, claimed by | |