Jean-Baptiste Cyrus de Timbrune de Thiembronne, Comte de Valence (French pronunciation: [ʒɑ̃ batist siʁys də tɛ̃bʁyn də tjɑ̃bʁɔn də valɑ̃s]; 22 September 1757 – 4 February 1822) commanded French troops during the French Revolutionary Wars and the Napoleonic Wars.

Valence led troops at Valmy in 1792 and was soon appointed to command the Army of the Ardennes.

Becoming involved in Charles Francois Dumouriez's failed plot to seize control of the army, he defected in April 1793.

Emperor Napoleon named him to lead an infantry division in the Peninsular War where he led Polish troops at Ciudad Real and Almonacid in 1809.

He commanded a heavy cavalry division during the French invasion of Russia leading his horsemen at Borodino and Vyazma.