Santhia or Santhià may refer to:
Places Santhià, an Italian municipality in the Piedmont region Santhia Upazila, an administrative area in Bangladesh (formerly Santhia in India)
People 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
Other uses Santhiya, the learning of pronunciation of Sikh scriptures SS Santhia, a 1901 steamship of the British India Steam Navigation Company