The meridian 115° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, Australasia, the Southern Ocean, and Antarctica to the South Pole.
The 115th meridian east forms a great circle with the 65th meridian west.
Between Australia and the 60th parallel south it forms the western boundary of the South Pacific Nuclear-Weapon-Free Zone.
Starting at the North Pole and heading south to the South Pole, the 115th meridian east passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Laptev Sea | ||
| Sakha Republic Irkutsk Oblast — from Republic of Buryatia — from Zabaykalsky Krai — from | ||
| Inner Mongolia Hebei – from Henan – from Shandong – from Henan – from Anhui – for about 18 km from Henan – from Hubei – from Jiangxi – from Guangdong – from | ||
| South China Sea | Passing through the disputed Spratly Islands | |
| On the island of Borneo | ||
| Sarawak - on the island of Borneo | ||
| On the island of Borneo North Kalimantan East Kalimantan Central Kalimantan South Kalimantan | ||
| Java Sea | ||
| Bali Sea | ||
| Island of Bali | ||
| Indian Ocean | ||
| Western Australia – Thevenard Island | ||
| Indian Ocean | ||
| Western Australia | ||
| Indian Ocean | ||
| Western Australia | ||
| Indian Ocean | ||
| Southern Ocean | ||
| Antarctica | Australian Antarctic Territory, claimed by | |