Charles Guernier (26 April 1870 – 19 February 1943) was a French politician.
He was deputy for Ille-et-Vilaine from 1906 to 1924 and from 1928 to 1942.
He was Minister of Posts, Telegraphs, and Telephones from 1931 to 1932, and Minister of Public Works and the Merchant Marine in 1932.