Judo at the 2012 Summer Olympics – Men's 81 kg
Men's 81 kg competition in judo at the 2012 Summer Olympics in London, United Kingdom, took place at ExCeL London.
The gold and silver medals were determined by a single-elimination tournament, with the winner of the final taking gold and the loser receiving silver. Judo events awarded two bronze medals. Quarterfinal losers competed in a repechage match for the right to face a semifinal loser for a bronze medal.
Schedule
All times are British Summer Time| Date | Time | Round |
| Tuesday, 31 July 2012 | 09:30 14:00 16:10 | Qualifications Semifinals Final |