Santhia or Santhià may refer to:

• Santhià, an Italian municipality in the Piedmont region
• Santhia Upazila, an administrative area in Bangladesh (formerly Santhia in India)

• Enrico Santià (b 1918), an Italian football player
• Giuseppe Santhià, an Italian cyclist and stage winner in the 1911 and 1913 Giro d'Italia
• Ignatius of Santhià (1686–1770), an Italian Roman Catholic priest

• Santhiya, the learning of pronunciation of Sikh scriptures
• SS Santhia, a 1901 steamship of the British India Steam Navigation Company

This disambiguation page lists articles associated with the title Santhia.
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