The Men's 100+ kg Judo competition at the 2008 Summer Olympics was held on August 15 at the Beijing Science and Technology University Gymnasium.

This event was the heaviest of the men's judo weight classes, allowing competitors with over 100 kilograms of body mass.

The tournament bracket consisted of a single-elimination contest culminating in a gold medal match.

The two judokas who lost in the semifinals faced the winner of the opposite half of the bracket's repechage in bronze medal bouts.

In this competition, the heaviest athlete of the Games, Ricardo Blas Jr., competed with a body weight of 210 kg.