The meridian 145° 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 145th meridian west forms a great circle with the 35th meridian east.
Starting at the North Pole and heading south to the South Pole, the 145th meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Beaufort Sea | ||
| Alaska | ||
| Pacific Ocean | ||
| Takaroa atoll | ||
| Pacific Ocean | Passing just east of Takapoto atoll, (at) Passing just east of Kauehi atoll, (at) | |
| Raraka atoll | ||
| Pacific Ocean | Passing just east of Faaite atoll, (at) Passing just west of Tahanea atoll, (at) Passing just west of Hereheretue atoll, (at) | |
| Southern Ocean | ||
| Antarctica | Unclaimed territory | |