The meridian 73° 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 73rd meridian east forms a great circle with the 107th meridian west.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 73rd 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" style="background:#b0e0e6;" | Gulf of Ob ! scope="row" | 🇷🇺 ! scope="row" style="background:#b0e0e6;" | Gulf of Ob ! scope="row" | 🇷🇺 ! scope="row" style="background:#b0e0e6;" | Gulf of Ob ! scope="row" | 🇷🇺 ! scope="row" | 🇰🇿 ! scope="row" | 🇰🇬 ! scope="row" | 🇺🇿 ! scope="row" | 🇰🇬 ! scope="row" | 🇹🇯 ! scope="row" | 🇦🇫 ! scope="row" | 🇵🇰 ! 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" | 🇲🇻 ! 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