HMS King Roger III was a superdreadnought of the Royal Manticoran Navy.

Around 1920 PD, the ship was commanded by Captain Harold O'Dell and served as Admiral Theodosia Kuzak's flagship in the Third Fleet. In the Battle of Manticore, it suffered a total compensator failure, leading to the death of its entire complement, including Admiral Kuzak and her staff. (HH11)