The meridian 73° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Atlantic Ocean, the Caribbean Sea, South America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

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

From Pole to Pole
Starting at the North Pole and heading south to the South Pole, the 73rd meridian west passes through:

{| class="wikitable plainrowheaders"
! scope="col" width="120" | Co-ordinates
! scope="col" | Country, territory or sea
! scope="col" | Notes
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Arctic Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Nunavut – Ellesmere Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Nares Strait
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Cape Alexander
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Baffin Bay
| style="background:#b0e0e6;" | Passing just west of Hakluyt Island,  (at ) Passing through the Carey Islands,  (at )
|-
| 
! scope="row" | 
| Nunavut – Dexterity Island, Adams Island and Baffin Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Foxe Basin
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Nunavut – Baffin Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Hudson Strait
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Quebec – passing through the Archipelago of Saint-Pierre Lake
|-valign="top"
| 
! scope="row" | 
| Vermont Massachusetts – from  Connecticut – from  (passing just west of New Haven at ) 
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Long Island Sound
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| New York – Long Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Island of Mayaguana
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Island of Little Inagua
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" | Passing just east of the island of Great Inagua,  (at ) Passing just west of the island of Tortuga,  (at )
|-
| 
! scope="row" | 
| Island of Hispaniola
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Caribbean Sea
| style="background:#b0e0e6;" | Gulf of Gonâve
|-
| 
! scope="row" | 
| Gonâve Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Caribbean Sea
| style="background:#b0e0e6;" | Gulf of Gonâve
|-
| 
! scope="row" | 
| Island of Hispaniola – Tiburon Peninsula
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Caribbean Sea
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-valign="top"
| 
! scope="row" | 
| Amazonas Acre – from 
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
| Acre
|-
| 
! scope="row" | 
|
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" |  
| Passing just east of Concepción
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Gulf of Ancud
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Gulf of Corcovado
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Mainland, Magdalena Island, and the mainland again
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
| Mainland, Riesco Island and Santa Inés Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Noir Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Southern Ocean
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | Antarctica
| Alexander Island and mainland – claimed by ,  and 
|-
|}

See also
72nd meridian west
74th meridian west

w073 meridian west
서경 73도(西經73度)는 본초 자오선에서 서쪽으로 73도 떨어진 경선이다. 북극점에서 시작하여 북극해, 그린란드, 북아메리카, 대서양, 남아메리카, 태평양, 남극해, 남극을 거쳐 남극점에 이른다.

서경 73도는 동경 107도와 이어져 지구의 둘레를 이룬다.

지나가는 지역 
북극점에서 남극점까지 서경 73도선은 다음 지역을 지나간다.

{| class="wikitable plainrowheaders"
! scope="col" width="120" | 좌표
! scope="col" | 나라, 지역, 해역
! scope="col" | 주석
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 북극해
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 누나부트 준주 – 엘즈미어섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 네어스 해협
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 서덜랜드섬
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 배핀만
| style="background:#b0e0e6;" |  하클루이트섬() 바로 서쪽을 지나감  케이리 제도()를 통과함
|-
| 
! scope="row" | 
| 누나부트 준주 – 덱스터리티섬, 애덤스섬, 배핀섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Foxe Basin
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 누나부트 준주 – 배핀섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 허드슨 해협
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 퀘벡주
|-valign="top"
| 
! scope="row" | 
| 버몬트주 매사추세츠주 – 부터 코네티컷주 – 부터
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 롱아일랜드 해협
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 뉴욕주 – 롱아일랜드
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 대서양
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 마야과나섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 대서양
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 이나과섬
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 대서양
| style="background:#b0e0e6;" | 이나과,  이나과섬() 바로 동쪽을 지나감  토르투가섬() 바로 서쪽을 지나감
|-
| 
! scope="row" | 
| 히스파니올라섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 카리브해
| style="background:#b0e0e6;" | 고나브만
|-
| 
! scope="row" | 
| 고나브섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 카리브해
| style="background:#b0e0e6;" | 고나브만
|-
| 
! scope="row" | 
| 히스파니올라섬 티뷔롱반도
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 카리브해
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-valign="top"
| 
! scope="row" | 
| 아마조나스주 아크리주 – 부터
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
| 에이커
|-
| 
! scope="row" | 
|
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 콘셉시온 바로 동쪽을 통과함
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 안쿠드만
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 코르코바도만
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 본토, 막달레나섬, 본토
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
| 본토, 리에스코섬, 산타이네스섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 노이르섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 남극해
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | 남극
| 알렉산더섬과 본토 – , , 이 영유권을 주장함.
|-
|}

같이 보기 
 서경 72도
 서경 74도

서경 073도