# 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 (that is, the judokas defeated in quarterfinals A and B competed against each other, with the winner of that match facing the semifinal loser from the other half of the bracket).

## Schedule

All times are British Summer Time (UTC+1)
| Date | Time | Round |
| Tuesday, 31 July 2012 | 09:30 14:00 16:10 | Qualifications Semifinals Final |

## Results
### Finals

| Semi-finals | Semi-finals | Final | Final |
| Travis Stevens (USA) | 0000 |
| Ole Bischof (GER) | 0000 | | |
| Ole Bischof (GER) | 0000 | Ole Bischof (GER) | 0001 |
| | | Kim Jae-Bum (KOR) | 0020 |
| Kim Jae-Bum (KOR) | 0100 | Kim Jae-Bum (KOR) | 0020 |
| Ivan Nifontov (RUS) | 0001 | | |

### Repechages

| Repechage | Repechage | Repechage | Bronze medal | Bronze medal | Bronze medal |
| Leandro Guilheiro (BRA) | Leandro Guilheiro (BRA) | 0002 | | | |
| Takahiro Nakai (JPN) | Takahiro Nakai (JPN) | 0011 | Takahiro Nakai (JPN) | Takahiro Nakai (JPN) | 0000 |
| | | | Ivan Nifontov (RUS) | Ivan Nifontov (RUS) | 0201 |
| Repechage | Repechage | Repechage | Bronze medal | Bronze medal | Bronze medal |
| Emmanuel Lucenti (ARG) | Emmanuel Lucenti (ARG) | 0001 | | | |
| Antoine Valois-Fortier (CAN) | Antoine Valois-Fortier (CAN) | 0101 | Antoine Valois-Fortier (CAN) | Antoine Valois-Fortier (CAN) | 0011 |
| | | | Travis Stevens (USA) | Travis Stevens (USA) | 0000 |

### Pool A

| Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals |
| L Guilheiro (BRA) | L Guilheiro (BRA) | 0010 | | | | | | |
| K Ovčiņņikovs (LAT) | K Ovčiņņikovs (LAT) | 0002 | | | | | | |
| | | | L Guilheiro (BRA) | L Guilheiro (BRA) | 1001 | | | |
| | | | S Attaf (MAR) | S Attaf (MAR) | 0001 | | | |
| L Saryee (LBR) | L Saryee (LBR) | 0000 | | | | | | |
| S Attaf (MAR) | S Attaf (MAR) | 1000 | | | | | | |
| | | | | | | L Guilheiro (BRA) | L Guilheiro (BRA) | 0000 |
| | | | | | | T Stevens (USA) | T Stevens (USA) | 0010 |
| T Stevens (USA) | T Stevens (USA) | 1010 | | | | | | |
| A Sedej (SLO) | A Sedej (SLO) | 0002 | | | | | | |
| | | | T Stevens (USA) | T Stevens (USA) | 1000 | | | |
| | | | A Tchrikishvili (GEO) | A Tchrikishvili (GEO) | 0000 | | | |
| T Marijanović (CRO) | T Marijanović (CRO) | 0001 | | | | | | |
| A Tchrikishvili (GEO) | A Tchrikishvili (GEO) | 0100 | | | | | | |

### Pool B

| First Round | First Round | First Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | O Bischof (GER) | O Bischof (GER) | 0101 | | | | | | |
| | | | A Ciano (ITA) | A Ciano (ITA) | 0001 | | | | | | |
| | | | | | | O Bischof (GER) | O Bischof (GER) | 1011 | | | |
| A Vasylenko (UKR) | A Vasylenko (UKR) | 0001 | | | | I Bozbayev (KAZ) | I Bozbayev (KAZ) | 0012 | | | |
| I Bozbayev (KAZ) | I Bozbayev (KAZ) | 1000 | I Bozbayev (KAZ) | I Bozbayev (KAZ) | 0200 | | | | | | |
| | | | S Denanyoh (TOG) | S Denanyoh (TOG) | 0000 | | | | | | |
| | | | | | | | | | O Bischof (GER) | O Bischof (GER) | 1010 |
| | | | | | | | | | T Nakai (JPN) | T Nakai (JPN) | 0000 |
| | | | T Nakai (JPN) | T Nakai (JPN) | 1000 | | | | | | |
| | | | B Munyonga (ZAM) | B Munyonga (ZAM) | 0000 | | | | | | |
| | | | | | | T Nakai (JPN) | T Nakai (JPN) | 0101 | | | |
| | | | | | | S Toma (MDA) | S Toma (MDA) | 0003 | | | |
| | | | J Musil (CZE) | J Musil (CZE) | 0001 | | | | | | |
| | | | S Toma (MDA) | S Toma (MDA) | 1000 | | | | | | |

### Pool C

| Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals |
| J-B Kim (KOR) | J-B Kim (KOR) | 0010 | | | | | | |
| Y Imamov (UZB) | Y Imamov (UZB) | 0001 | | | | | | |
| | | | J-B Kim (KOR) | J-B Kim (KOR) | 0010 | | | |
| | | | L Csoknyai (HUN) | L Csoknyai (HUN) | 0002 | | | |
| P Wiradamungga (INA) | P Wiradamungga (INA) | 0001 | | | | | | |
| L Csoknyai (HUN) | L Csoknyai (HUN) | 0200 | | | | | | |
| | | | | | | J-B Kim (KOR) | J-B Kim (KOR) | 0100 |
| | | | | | | E Lucenti (ARG) | E Lucenti (ARG) | 0003 |
| A Schmitt (FRA) | A Schmitt (FRA) | 0000 | | | | | | |
| G Elmont (NED) | G Elmont (NED) | 0001 | | | | | | |
| | | | A Schmitt (FRA) | A Schmitt (FRA) | 0000 | | | |
| | | | E Lucenti (ARG) | E Lucenti (ARG) | 1000 | | | |
| F Ratsimiziva (MAD) | F Ratsimiziva (MAD) | 0001 | | | | | | |
| E Lucenti (ARG) | E Lucenti (ARG) | 1000 | | | | | | |

### Pool D

| First Round | First Round | First Round | Second Round | Second Round | Second Round | Third Round | Third Round | Third Round | Quarterfinals | Quarterfinals | Quarterfinals |
| E Mammadli (AZE) | E Mammadli (AZE) | 0001 | | | | | | | | | |
| A Valois-Fortier (CAN) | A Valois-Fortier (CAN) | 0001 | A Valois-Fortier (CAN) | A Valois-Fortier (CAN) | 1000 | | | | | | |
| | | | E Burton (GBR) | E Burton (GBR) | 0000 | | | | | | |
| | | | | | | A Valois-Fortier (CAN) | A Valois-Fortier (CAN) | 0112 | | | |
| | | | | | | S Mrvaljević (MNE) | S Mrvaljević (MNE) | 0011 | | | |
| | | | J Naulu (FIJ) | J Naulu (FIJ) | 0003 | | | | | | |
| | | | S Mrvaljević (MNE) | S Mrvaljević (MNE) | 0111 | | | | | | |
| | | | | | | | | | A Valois-Fortier (CAN) | A Valois-Fortier (CAN) | 0000 |
| | | | | | | | | | I Nifontov (RUS) | I Nifontov (RUS) | 0100 |
| | | | I Nifontov (RUS) | I Nifontov (RUS) | 1000 | | | | | | |
| | | | R de Windt (IOA) | R de Windt (IOA) | 0004 | | | | | | |
| | | | | | | I Nifontov (RUS) | I Nifontov (RUS) | 0101 | | | |
| | | | | | | J Bottieau (BEL) | J Bottieau (BEL) | 0001 | | | |
| | | | O Simmonds Pea (PAN) | O Simmonds Pea (PAN) | 0001 | | | | | | |
| | | | J Bottieau (BEL) | J Bottieau (BEL) | 1100 | | | | | | |