Théophile Bidard

Théophile Bidard (11 March 1804, in Rennes – 23 October 1877) was a well-known law professor in Rennes, France during the 1840s and 1850s. He was one of the principal witnesses for the prosecution in the Hélène Jégado trial in 1851. Employed as a cook, Jégado had killed two of Bidard's servants with arsenic after a long series of similar crimes over a period of eighteen years. She was executed by guillotine in February 1852.

Bidard held elected office as Mayor and Deputy for Rennes for a short period after the fall of Napoleon III of France in 1871.