Colombia

• La Unión, Antioquia
  La Unión, Antioquia
  La Unión is a town and municipality in the Colombian department of Antioquia. Part of the subregion of Eastern Antioquia....
  
  
• La Unión, Nariño
  La Unión, Nariño
  La Unión is a town and municipality in the Nariño Department, Colombia....
  
  
• La Unión, Sucre
  La Unión, Sucre
  La Unión is a town and municipality located in the Sucre Department, northern Colombia.-References:...
  
  
• La Unión, Valle del Cauca
  La Unión, Valle del Cauca
  La Unión is a town and municipality located in the Department of Valle del Cauca, Colombia.-External links:...
  
  

Peru

• La Unión Province, Peru
• La Unión District, Dos de Mayo
  La Unión District, Dos de Mayo
  La Unión District is one of nine districts of the province Dos de Mayo in Peru.-References:...
  
  , district of the Dos de Mayo province in Huánuco
• La Unión District, Piura
  La Unión District, Piura
  La Unión District is one of nine districts of the province Piura in Peru.-References:...
  
  , district of the Piura province in Piura
• La Unión District, Tarma
  La Unión District, Tarma
  La Unión District is one of nine districts of the province Tarma in Peru.-References:...
  
  , district of the Tarma province in Junín
• La Unión, Huánuco
  La Unión, Huánuco
  La Unión is a town in central Peru, capital of the province Dos de Mayo in the region Huánuco.The city is over the Vizcarra river and has two districts, Agüamiro on the right bank and Ripán on the left bank...
  
  , capital of the Dos de Mayo province in Huánuco

Other uses

• La Unión (band), a Spanish pop/rock band (see List of bands from Spain)