Charpentier is the French word for carpenter and a French surname. A variant spelling is Carpentier. In English the name is spelled Carpenter (surname) while in German it is Zimmermann.
The origin of the name dates to 900-1000 where Charpentier comes from Old French, Late Latin: carpentarius artifex or wainwright, equivalent to Latin carpent(um) two wheeled carriage ( < Celt; cf. OIr carpad chariot) + arius - ARY; see ER2.
Read more about Charpentier: List of Persons With The Surname