The meridian 170° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Pacific Ocean, New Zealand, the Southern Ocean, and Antarctica to the South Pole.
The 170th meridian east forms a great circle with the 10th meridian west.
Starting at the North Pole and heading south to the South Pole, the 170th meridian east passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| East Siberian Sea | ||
| Anadyr Highlands, Chukotka Autonomous Okrug Kamchatka Krai — from | ||
| Bering Sea | ||
| Pacific Ocean | Passing just west of Bikar Atoll, (at) Passing just east of Utirik Atoll, (at) Passing just east of Ailuk Atoll, (at) | |
| Wotje Atoll and Erikub Atoll | ||
| Pacific Ocean | Passing just east of Anuta island, (at) Passing just west of Futuna island, (at) Passing just east of Anatom island, (at) | |
| South Island | ||
| Pacific Ocean | Passing just east of Campbell Island, (at) | |
| Southern Ocean | ||
| Antarctica | Ross Dependency, claimed by | |
| Southern Ocean | Ross Sea — passing just east of Coulman Island (at) | |
| Antarctica | Ross Dependency, claimed by | |