| OAXACA | A republic on the Isthmus of Panama (6) |
| ATRATO | River rising in Colombia that meanders north across the base of the Isthmus of Panama to the Gulf of Uraba (6) |
| CANALZONE | Former administrative region of the U.S. on the Isthmus of Panama (5,4) |
| COSTARICA | Republic in Central America on the Isthmus of Panama (5,4) |
| SANBLAS | ? Islands, archipelago off the north coast of the Isthmus of Panama |
| LATVIA | A republic on the eastern coast of the Baltic Sea (6) |
| AMERICAS | Landmass consisting of two continents connected by the Isthmus of Panama (8) |
| YEMENI | From a republic on the Arabian Peninsula (6) |
| PANAMA | Country situated on the isthmus connecting North and South America (6) |
| CORINTH | The Isthmus of - connects the Peloponnesus with the mainland of Greece (7) |
| KRA | The Isthmus of --- is the narrowest part of the Malay Peninsula (3) |
| MALAY | Also called Kra Peninsula, this long, narrow appendix of Asia extends south for a distance of about 700 miles (1,127 km) through the Isthmus of Kra to Cape Pia. (5) |
| MUSSEL | Seafood from the isthmus selection (6) |
| PELOPONNESE | The - - -, southern peninsula of Greece, joined to central Greece by the Isthmus of Corinth (11) |
| SINAI | Peninsula adjoining the Isthmus of Suez |
| NOVASCOTIA | It's connected to New Brunswick by the Isthmus of Chignecto |
| ASIA | It is connected to Africa via the Isthmus of Suez (4) |
| GEORGIA | A republic on the Black Sea, the capital of which is Tbilisi (7) |
| GABON | A republic on the west coast of Africa. |
| TOGO | A republic on the western coast of Africa (4) |
