With The Unión (or "La Union" without accent) can indicate:
Chile
- The Unión, Chilean municipality
Colombia
- The Unión, common in Department of Antioquia
- The Unión, common in Department of Nariño
- The Unión, common in Department of Sucre
- The Unión, common in Department of Valle del Cauca
Costa Rica
- The Unión, district in the canton of Montes de Oro
- Canton of La Unión, canton of Costa Rica
El Salvador
- The Unión, department of El Salvador
- The Unión, city of El Salvador
Philippines
- Province of La Union, Philippine province
Guatemala
- The Unión, common in the Department of Zacapa
Honduras
- The Unión, municipality in the Copán Department
- The Unión, common in the Lempira Department
- The Unión, common in the Department of Olancho
Mexico
- The Unión, locality of the State of Chiapas
- The Unión, locality of the State Guerrero
- The Unión, locality of the State of Quintana Roo
- The Union de Isidoro Montes de Oca, municipality of the Guerrero State
Peru
- The Unión, province of Arequipa region
- The Unión, district of the province of Dos de Mayo
- The Unión, district of the province of Piura
- The Unión, district of the province of Tarma
- The Unión, city of Peru
Spain
- The Unión, Spanish municipality
Uruguay
- The Unión, barrio (neighborhood) of Montevideo