The name Marlon is a boy's name of English origin. Marlon is ranked #791 on our popularity charts and is often added to lists like English Names for Boys and discussed in our forums with posts like "Sibset makeover game! B/G pairs".
From the experts:
Associated for half a century with Marlon Brando, who inherited the French-inflected name from his father, Marlon has been especially well used by African-Americans, including the Jackson and Wayans families. Though heard much less now than it was in the seventies, this could change as parents look to the names of old Hollywood stars.
Keith Richards, Dennis Miller, and (more recently) Monet Mazur all have sons named Marlon.