Franz Xaver Schwarz was a German politican who served as the Treasurer of the Nazi Party during most of the Party's existence. Between 1934 and 1945, Schwarz also held several titles and positions in the government of Nazi Germany.

Franz Xaver Schwarz was only one of four people to have held the rank of SS-Oberstgruppenführer and, of the four, the only one to hold the rank as a honorary title without equivalent Ordnungspolizei or Waffen-SS rank.