Clemens or Klemens August of Bavaria (1700-1761) was born in Brussels, a member of the Wittelsbach house.

His uncle Joseph Clemens, elector and Archbishop of Cologne saw to it that Klemens August of Bavaria received several appointments in Alt-Oetting , diocese Regensburg and at the Prince-Bishopric Berchtesgaden and he soon received papal confirmation as bishop of Regensburg, later Cologne.

As Archbishop of Cologne, he was one of the electors, a Prince-Bishop of Münster, Hildesheim, and Osnabrück, and a Grand Master of the Teutonic Order.