Meridian barat ke-80
Dari ujung ke ujung

Berawal di Kutub Utara menuju selatan di Kutub Selatan, meridian barat ke-80 melintasi:
| Koordinat | Negara, teritori, atau laut | Catatan |
| --- | --- | --- |
| 90°0′N 80°0′W﻿ / ﻿90.000°N 80.000°W﻿ / 90.000; -80.000﻿ (Arctic Ocean) | Samudra Arktik |  |
| 82°56′N 80°0′W﻿ / ﻿82.933°N 80.000°W﻿ / 82.933; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Ellesmere |
| 76°14′N 80°0′W﻿ / ﻿76.233°N 80.000°W﻿ / 76.233; -80.000﻿ (Jones Sound) | Teluk Jones | Melintas di sebelah barat Pulau Coburg, Nunavut,  Kanada |
| 75°33′N 80°0′W﻿ / ﻿75.550°N 80.000°W﻿ / 75.550; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Devon dan Pulau Philpots |
| 74°50′N 80°0′W﻿ / ﻿74.833°N 80.000°W﻿ / 74.833; -80.000﻿ (Baffin Bay) | Teluk Baffin |  |
| 73°44′N 80°0′W﻿ / ﻿73.733°N 80.000°W﻿ / 73.733; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Bylot |
| 72°53′N 80°0′W﻿ / ﻿72.883°N 80.000°W﻿ / 72.883; -80.000﻿ (Eclipse Sound) | Teluk Eclipse |  |
| 72°31′N 80°0′W﻿ / ﻿72.517°N 80.000°W﻿ / 72.517; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Ragged dan Pulau Baffin |
| 69°57′N 80°0′W﻿ / ﻿69.950°N 80.000°W﻿ / 69.950; -80.000﻿ (Murray Maxwell Bay) | Teluk Murray Maxwell |  |
| 72°31′N 80°0′W﻿ / ﻿72.517°N 80.000°W﻿ / 72.517; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Jens Munk |
| 69°30′N 80°0′W﻿ / ﻿69.500°N 80.000°W﻿ / 69.500; -80.000﻿ (Foxe Basin) | Cekungan Foxe |  |
| 65°30′N 80°0′W﻿ / ﻿65.500°N 80.000°W﻿ / 65.500; -80.000﻿ (Foxe Channel) | Selat Foxe | Melintas di sebelah timur Pulau Southampton, Nunavut,  Kanada |
| 63°4′N 80°0′W﻿ / ﻿63.067°N 80.000°W﻿ / 63.067; -80.000﻿ (Hudson Bay) | Teluk Hudson |  |
| 62°19′N 80°0′W﻿ / ﻿62.317°N 80.000°W﻿ / 62.317; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Mansel |
| 61°43′N 80°0′W﻿ / ﻿61.717°N 80.000°W﻿ / 61.717; -80.000﻿ (Hudson Bay) | Teluk Hudson |  |
| 59°53′N 80°0′W﻿ / ﻿59.883°N 80.000°W﻿ / 59.883; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Gilmour |
| 59°48′N 80°0′W﻿ / ﻿59.800°N 80.000°W﻿ / 59.800; -80.000﻿ (Hudson Bay) | Teluk Hudson | Melintas di sebelah barat Pulau Split, Nunavut,  Kanada |
| 56°19′N 80°0′W﻿ / ﻿56.317°N 80.000°W﻿ / 56.317; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau Kugong dan Pulau Flaherty |
| 55°54′N 80°0′W﻿ / ﻿55.900°N 80.000°W﻿ / 55.900; -80.000﻿ (Hudson Bay) | Teluk Hudson |  |
| 54°41′N 80°0′W﻿ / ﻿54.683°N 80.000°W﻿ / 54.683; -80.000﻿ (James Bay) | Teluk James |  |
| 53°23′N 80°0′W﻿ / ﻿53.383°N 80.000°W﻿ / 53.383; -80.000﻿ (Canada) |  Kanada | Nunavut - Pulau North Twin |
| 53°14′N 80°0′W﻿ / ﻿53.233°N 80.000°W﻿ / 53.233; -80.000﻿ (James Bay) | James Bay | Melintas di sebelah barat Pulau South Twin, Nunavut,  Kanada |
| 51°14′N 80°0′W﻿ / ﻿51.233°N 80.000°W﻿ / 51.233; -80.000﻿ (Canada) |  Kanada | Ontario |
| 42°48′N 80°0′W﻿ / ﻿42.800°N 80.000°W﻿ / 42.800; -80.000﻿ (Lake Erie) | Danau Erie |  |
| 42°10′N 80°0′W﻿ / ﻿42.167°N 80.000°W﻿ / 42.167; -80.000﻿ (United States) |  Amerika Serikat | Pennsylvania - Melintasi Pittsburgh  West Virginia  Virginia  North Carolina  South Carolina - passing through Charleston |
| 32°37′N 80°0′W﻿ / ﻿32.617°N 80.000°W﻿ / 32.617; -80.000﻿ (Atlantic Ocean) | Samudra Atlantik | Melintas di sebelah timur Palm Beach, Florida,  Amerika Serikat  Melintasi Atol Cay Sal Bank,  Bahama |
| 23°3′N 80°0′W﻿ / ﻿23.050°N 80.000°W﻿ / 23.050; -80.000﻿ (Cuba) |  Kuba |  |
| 21°44′N 80°0′W﻿ / ﻿21.733°N 80.000°W﻿ / 21.733; -80.000﻿ (Caribbean Sea) | Laut Karibia |  |
| 19°43′N 80°0′W﻿ / ﻿19.717°N 80.000°W﻿ / 19.717; -80.000﻿ (Cayman Islands) |  Kepulauan Cayman | Pulau Little Cayman |
| 19°42′N 80°0′W﻿ / ﻿19.700°N 80.000°W﻿ / 19.700; -80.000﻿ (Caribbean Sea) | Laut Karibia |  |
| 9°20′N 80°0′W﻿ / ﻿9.333°N 80.000°W﻿ / 9.333; -80.000﻿ (Panama) |  Panama |  |
| 8°26′N 80°0′W﻿ / ﻿8.433°N 80.000°W﻿ / 8.433; -80.000﻿ (Gulf of Panama) | Teluk Panama |  |
| 7°31′N 80°0′W﻿ / ﻿7.517°N 80.000°W﻿ / 7.517; -80.000﻿ (Panama) |  Panama | Melintasi ujung Semenanjung Azuero |
| 7°28′N 80°0′W﻿ / ﻿7.467°N 80.000°W﻿ / 7.467; -80.000﻿ (Pacific Ocean) | Samudra Pasifik |  |
| 0°49′N 80°0′W﻿ / ﻿0.817°N 80.000°W﻿ / 0.817; -80.000﻿ (Ecuador) |  Ekuador | Daratan utama, Pulau Puná, dan daratan utama lagi |
| 4°22′S 80°0′W﻿ / ﻿4.367°S 80.000°W﻿ / -4.367; -80.000﻿ (Peru) |  Peru | Region Piura  Region Lambayeque |
| 6°44′S 80°0′W﻿ / ﻿6.733°S 80.000°W﻿ / -6.733; -80.000﻿ (Pacific Ocean) | Samudra Pasifik | Melintas antara Kepulauan Desventuradas,  Chili  Melintas antara Kepulauan Juan Fernández,  Chili |
| 60°0′S 80°0′W﻿ / ﻿60.000°S 80.000°W﻿ / -60.000; -80.000﻿ (Southern Ocean) | Samudra Selatan |  |
| 73°2′S 80°0′W﻿ / ﻿73.033°S 80.000°W﻿ / -73.033; -80.000﻿ (Antarctica) | Antarktika | Menetapkan perbatasan barat Teritori Antarktika Britania, diklaim oleh  Britania Raya  Melintasi Provinsi Antártica Chilena, diklaim oleh  Chili |