Jacques or Jácome Ratton (7 July 1736 in Monestier de Briançon, Hautes-Alpes – 3 July 1820 in Paris) was a Franco-Portuguese businessman, who was a leading figure in the mainly foreign group of industrialists in 18th-century Portugal. He published his ''Memoirs'' (''Recordações'') in 1813 in exile in London, which remain a significant source on Portuguese economic life in the period.
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