Jean-Baptiste Lynch (3 June 1749 – 15 August 1835) was a Count of the First French Empire, Mayor of Bordeaux and a peer of France, sitting in the upper house of the French Senate.
Lynch opposed the French Revolution (1789–1799), and was later imprisoned under the Reign of Terror (5 September 1793 – 8 July 1794).
In 1808, he was appointed mayor of Bordeaux, and was for a time entirely devoted to Napoleon.
In 1813, he contacted the royalist agents, and in 1814 he surrendered the city to the British.