The meridian 85° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Gulf of Mexico, the Caribbean Sea, Central America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole. The 85th meridian west forms a great circle with the 95th meridian east.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 85th meridian west 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" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Eureka Sound ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Jones Sound ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Parry Channel ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Admiralty Inlet ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Fury and Hecla Strait ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Hudson Bay ! scope="row" | 🇨🇦 ! scope="row" style="background:#b0e0e6;" | Lake Superior ! scope="row" | 🇺🇸 ! scope="row" style="background:#b0e0e6;" | Lake Michigan ! scope="row" | 🇺🇸 ! scope="row" style="background:#b0e0e6;" | Gulf of Mexico ! scope="row" style="background:#b0e0e6;" | Caribbean Sea ! scope="row" | 🇭🇳 ! scope="row" | 🇳🇮 ! scope="row" | 🇨🇷 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" style="background:#b0e0e6;" | Southern Ocean ! scope="row" | Antarctica