Nicolas Leblanc, a French chemist

Dudley J. LeBlanc, a Louisiana State Sentor and the developer of HADACOL.

Romeo LeBlanc, a Canadian Governor General

The Leblanc process is an obsolete chemical procedure for manufacturing soda ash.

Matt LeBlanc, an American actor

Maurice Leblanc, a French novelist

Andre Le Blanc

Neil LeBlanc, a Canadian politician

Christian LeBlanc, an American actor

Adrian Nicole LeBlanc, an American journalist

Leblanc (musical instrument manufacturer), an American musical instrument manufacturer

Dominic LeBlanc, a Canadian politician

Leblanc (Automobile manufacturer), a Swiss manufacturer of high-performance cars.

Mark LeBlanc, an American music producer and electronic musician

Jean-Marie Leblanc, a French cyclist and ex-director of the Tour de France