Jean-Baptiste-Louis-Jacques-Joseph Rousseau, most often called Jean-Baptiste Rousseau or Joseph Rousseau, (10 December 1780 – 22 February 1831) was an early 19th-century French orientalist.
He was the son of Jean-François Rousseau or Rousseau of Persia (1753-1808), consul of France in Basra and Baghdad and Anne-Marie Sahid.