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.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 115th meridian east passes through: ! scope="col" width="130" | Co-ordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes ! scope="row" style="background:#b0e0e6;" | Arctic Ocean ! scope="row" style="background:#b0e0e6;" | Laptev Sea ! scope="row" | 🇷🇺 ! scope="row" | 🇲🇳 ! scope="row" | ! scope="row" style="background:#b0e0e6;" | South China Sea ! scope="row" | 🇧🇳 ! scope="row" | 🇲🇾 ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Java Sea ! scope="row" style="background:#b0e0e6;" | Bali Sea ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" | 🇦🇺 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" | 🇦🇺 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" | 🇦🇺 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" style="background:#b0e0e6;" | Southern Ocean ! scope="row" | Antarctica