Starting at the Prime Meridian and heading eastwards, the parallel 73° south passes through:

Co-ordinates	Continent or ocean	Notes
73°0′S 0°0′E / 73.000°S 0.000°E / -73.000; 0.000 (Prime Meridian)	Antarctica	Queen Maud Land, claimed by   Norway
73°0′S 45°0′E / 73.000°S 45.000°E / -73.000; 45.000		Western Australian Antarctic Territory, claimed by   Australia
73°0′S 136°0′E / 73.000°S 136.000°E / -73.000; 136.000		Adélie Land, claimed by   France
73°0′S 142°0′E / 73.000°S 142.000°E / -73.000; 142.000		Eastern Australian Antarctic Territory, claimed by   Australia
73°0′S 160°0′E / 73.000°S 160.000°E / -73.000; 160.000		Ross Dependency, claimed by   New Zealand
73°0′S 169°37′E / 73.000°S 169.617°E / -73.000; 169.617 (Southern Ocean)	Southern Ocean	Ross Sea, south of the Pacific Ocean
73°0′S 103°26′W / 73.000°S 103.433°W / -73.000; -103.433	Antarctica	Marie Byrd Land, Unclaimed territory
73°0′S 90°0′W / 73.000°S 90.000°W / -73.000; -90.000		Antártica Chilena, claimed by   Chile
73°0′S 85°46′W / 73.000°S 85.767°W / -73.000; -85.767 (Southern Ocean)	Southern Ocean	Bellingshausen Sea, south of the Pacific Ocean
73°0′S 79°3′W / 73.000°S 79.050°W / -73.000; -79.050	Antarctica	Territory claimed by   Chile and   United Kingdom (overlapping claims)
73°0′S 74°17′W / 73.000°S 74.283°W / -73.000; -74.283 (Southern Ocean)	Southern Ocean	Bellingshausen Sea, south of the Pacific Ocean
73°0′S 73°7′W / 73.000°S 73.117°W / -73.000; -73.117	Antarctica	Territory claimed by   Argentina,   Chile and   United Kingdom (overlapping claims)
73°0′S 59°48′W / 73.000°S 59.800°W / -73.000; -59.800 (Southern Ocean)	Southern Ocean	Weddell Sea, south of the Atlantic Ocean
73°0′S 19°21′W / 73.000°S 19.350°W / -73.000; -19.350	Antarctica	Queen Maud Land, claimed by   Norway

• 72nd parallel south
• 74th parallel south