The heaviest weighted pull up weighed 206.2 lb (93.53 kg) and was achieved by Steven Proto (USA) at a personal gym in Edmond, Oklahoma, USA, on 9 July 2011.
Proto attached four gymnasium weight plates to a belt worn around his waist during the pull up. The plates were tied together with a chain. The entire apparatus was weighed before and immediately after the attempt.
Comments below may relate to previous holders of this record.