# Judo at the 2020 Summer Olympics – Men's 81 kg

The men's 81 kg competition in judo at the 2020 Summer Olympics in Tokyo was held on 27 July 2021 at the Nippon Budokan.

## Results
### Finals

| Semi-finals | Semi-finals | Gold medal | Gold medal |
| 1 Matthias Casse (BEL) | 00 |
| Takanori Nagase (JPN) | 01 | | |
| Takanori Nagase (JPN) | 01 | Takanori Nagase (JPN) | 01 |
| | | 6 Saeid Mollaei (MGL) | 00 |
| Shamil Borchashvili (AUT) | 00 | 6 Saeid Mollaei (MGL) | 00 |
| 6 Saeid Mollaei (MGL) | 10 | | |

### Repechage

| Repechage | Repechage | Bronze medal | Bronze medal |
| | | Shamil Borchashvili (AUT) | 10 |
| | | Dominic Ressel (GER) | 00 |
| 8 Alan Khubetsov (ROC) | 00 | Dominic Ressel (GER) | 00 |
| Dominic Ressel (GER) | 10 | | |
| Repechage | Repechage | Bronze medal | Bronze medal |
| | | 1 Matthias Casse (BEL) | 10 |
| | | 3 Tato Grigalashvili (GEO) | 00 |
| 7 Sharofiddin Boltaboev (UZB) | 00 | 3 Tato Grigalashvili (GEO) | 00 |
| 3 Tato Grigalashvili (GEO) | 01 | | |

### Pool A

| Round of 64 | Round of 64 | Round of 32 | Round of 32 | Round of 16 | Round of 16 | Quarter-finals | Quarter-finals |
| | | 1 Matthias Casse (BEL) | 11 | | |
| | | Adrián Gandía (PUR) | 01 | | |
| | | | | 1 Matthias Casse (BEL) | 11 |
| | | | | Robin Pacek (SWE) | 01 |
| | | Alain Mikael Aprahamian (URU) | 00 | | |
| | | Robin Pacek (SWE) | 10 | | |
| Robin Pacek (SWE) | 10 | Robin Pacek (SWE) | 10 | | |
| Housni Thaoubani (COM) | 00 | | | | | | |
| Housni Thaoubani (COM) | 00 | | | | | 1 Matthias Casse (BEL) | 10 |
| | | | | | | 8 Alan Khubetsov (ROC) | 00 |
| | | 8 Alan Khubetsov (ROC) | 10 | | | | |
| | | Vladimir Zoloev (KGZ) | 00 | | | | |
| | | | | 8 Alan Khubetsov (ROC) | 01 | | |
| | | | | Antoine Valois-Fortier (CAN) | 00 |
| | | Antoine Valois-Fortier (CAN) | 10 | | |
| | | Alexios Ntanatsidis (GRE) | 00 | | |

### Pool B

| Round of 64 | Round of 64 | Round of 32 | Round of 32 | Round of 16 | Round of 16 | Quarter-finals | Quarter-finals |
| | | 4 Vedat Albayrak (TUR) | 00 | | |
| | | Takanori Nagase (JPN) | 10 | | |
| | | | | Takanori Nagase (JPN) | 10 |
| | | | | Christian Parlati (ITA) | 00 |
| Mohamed Abdelaal (EGY) | 10 | | | Christian Parlati (ITA) | 00 |
| Attila Ungvári (HUN) | 00 | | | | |
| Attila Ungvári (HUN) | 00 | Mohamed Abdelaal (EGY) | 00 | | |
| | | Christian Parlati (ITA) | 11 | | |
| | | | | | | Takanori Nagase (JPN) | 01 |
| | | | | | | Dominic Ressel (GER) | 00 |
| | | 5 Frank de Wit (NED) | 10 | | | | |
| | | Peniamina Percival (SAM) | 00 | | | | |
| | | | | 5 Frank de Wit (NED) | 00 | | |
| | | | | Dominic Ressel (GER) | 01 |
| | | Wesam Abu Rmilah (PLE) | 00 | | |
| | | Dominic Ressel (GER) | 10 | | |

### Pool C

| Round of 32 | Round of 32 | Round of 16 | Round of 16 | Quarter-finals | Quarter-finals |
| 2 Sagi Muki (ISR) | 10 | | |
| Eduardo Yudy Santos (BRA) | 00 | | |
| | | 2 Sagi Muki (ISR) | 00 |
| | | Shamil Borchashvili (AUT) | 01 |
| Anri Egutidze (POR) | 00 | | |
| Shamil Borchashvili (AUT) | 01 | | |
| | | | | Shamil Borchashvili (AUT) | 01 |
| | | | | 7 Sharofiddin Boltaboev (UZB) | 00 |
| 7 Sharofiddin Boltaboev (UZB) | 10 | | | | |
| Hugo Cumbo (VAN) | 00 | | | | |
| | | 7 Sharofiddin Boltaboev (UZB) | 01 | | |
| | | Ivaylo Ivanov (BUL) | 00 |
| Ivaylo Ivanov (BUL) | 10 | | |
| Emmanuel Lucenti (ARG) | 00 | | |

### Pool D

| Round of 64 | Round of 64 | Round of 32 | Round of 32 | Round of 16 | Round of 16 | Quarter-finals | Quarter-finals |
| | | 3 Tato Grigalashvili (GEO) | 11 | | |
| | | Akmal Murodov (TJK) | 00 | | |
| Joshter Andrew (GUM) | 0 | Akmal Murodov (TJK) | 00 | | |
| Akmal Murodov (TJK) | 10 | | | | |
| Akmal Murodov (TJK) | 10 | | | 3 Tato Grigalashvili (GEO) | 10 |
| | | | | Lee Sung-ho (KOR) | 00 |
| | | Nacif Elias (LBN) | 00 | | |
| | | Lee Sung-ho (KOR) | 10 | | |
| | | | | | | 3 Tato Grigalashvili (GEO) | 01 |
| | | | | | | 6 Saeid Mollaei (MGL) | 10 |
| | | 6 Saeid Mollaei (MGL) | 10 | | | | |
| | | Didar Khamza (KAZ) | 00 | | | | |
| | | | | 6 Saeid Mollaei (MGL) | 01 | | |
| | | | | Murad Fatiyev (AZE) | 00 |
| | | Frederick Harris (SLE) | | | |
| | | Murad Fatiyev (AZE) | W/O | | |