The meridian 80° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole. The 80th meridian east forms a great circle with the 100th meridian west. There is also an 80 Degrees East cafe in Nanganallur, Chennai, India named after this longitude.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 80th meridian east passes through: ! scope="col" width="120" | Co-ordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes ! scope="row" style="background:#b0e0e6;" | Arctic Ocean ! scope="row" style="background:#b0e0e6;" | Kara Sea ! scope="row" | 🇷🇺 ! scope="row" style="background:#b0e0e6;" | Kara Sea ! scope="row" | 🇷🇺 ! scope="row" | 🇰🇿 ! scope="row" | ! scope="row" | 🇰🇿 ! scope="row" | 🇰🇬 ! scope="row" | ! scope="row" | Aksai Chin ! scope="row" | ! scope="row" | Aksai Chin ! 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