The meridian 101° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.
The 101st meridian west forms a great circle with the 79th meridian east.
Starting at the North Pole and heading south to the South Pole, the 101st meridian west passes through:
| Co-ordinates | Country, territory or sea | Notes |
|---|---|---|
| Arctic Ocean | ||
| Peary Channel | ||
| Nunavut — Ellef Ringnes Island | ||
| Danish Strait | ||
| Nunavut — King Christian Island | ||
| Unnamed waterbody | ||
| Nunavut — Helena Island | ||
| Sir William Parker Strait | ||
| May Inlet | ||
| Nunavut — Bathurst Island | ||
| Parry Channel | Viscount Melville Sound | |
| Nunavut — Prince of Wales Island | ||
| Ommanney Bay | ||
| M'Clintock Channel | Passing just west of Gateshead Island, Nunavut, | |
| Nunavut — Victoria Island and Qikiqtagafaaluk | ||
| Victoria Strait | ||
| Queen Maud Gulf | ||
| Nunavut Manitoba — from | ||
| North Dakota South Dakota — from Nebraska — from Kansas — from Oklahoma — from Texas — from | ||
| Coahuila Nuevo León — from Coahuila — from, passing through Saltillo Zacatecas — from San Luis Potosí — from (passing just west of San Luis Potosí city) Guanajuato — from Michoacán — from Guerrero — from | ||
| Pacific Ocean | ||
| Southern Ocean | ||
| Antarctica | Unclaimed territory | |