JaMarcus (or Ja'Marcus, J'Marcus) is a given name. Notable people with the given name include:
Ja'Marcus Bradley (born 1996), American football player Ja'Marcus Ingram, American football player Jamarcus Nelson (born 1992), American football player JaMarcus Russell (born 1985), American football player JaMarcus Shephard (born 1983), American football coach J'Marcus Webb (born 1988), American football player
See also DeMarcus, given name