# Judo at the 1976 Summer Olympics – Men's 80 kg

The men's 80 kg competition in judo at the 1976 Summer Olympics in Montreal was held on 28 July at the Olympic Velodrome. The gold medal was won by Isamu Sonoda of Japan.

## Results
### Main brackets
#### Pool A

| Round of 32 | Round of 32 | Round of 32 | Round of 16 | Round of 16 | Round of 16 | Quarterfinal | Quarterfinal | Quarterfinal | Semifinal | Semifinal | Semifinal |
| Assane N'Doye (SEN) | Assane N'Doye (SEN) | L | | | | | | | | | |
| Carlos Motta (BRA) | Carlos Motta (BRA) | W | Carlos Motta (BRA) | Carlos Motta (BRA) | L | | | | | | |
| Ibrahim Muzaffer (KUW) | Ibrahim Muzaffer (KUW) | L | Brian Jacks (GBR) | Brian Jacks (GBR) | W | | | | | | |
| Brian Jacks (GBR) | Brian Jacks (GBR) | W | | | | Brian Jacks (GBR) | Brian Jacks (GBR) | L | | | |
| Slavko Obadov (YUG) | Slavko Obadov (YUG) | W | | | | Slavko Obadov (YUG) | Slavko Obadov (YUG) | W | | | |
| Detlef Ultsch (GDR) | Detlef Ultsch (GDR) | L | Slavko Obadov (YUG) | Slavko Obadov (YUG) | W | | | | | | |
| Daniel Guldemont (BEL) | Daniel Guldemont (BEL) | L | Adam Adamczyk (POL) | Adam Adamczyk (POL) | L | | | | | | |
| Adam Adamczyk (POL) | Adam Adamczyk (POL) | W | | | | | | | Slavko Obadov (YUG) | Slavko Obadov (YUG) | L |
| José Luis de Frutos (ESP) | José Luis de Frutos (ESP) | W | | | | | | | Valeriy Dvoinikov (URS) | Valeriy Dvoinikov (URS) | W |
| Viðar Guðjohnsen (ISL) | Viðar Guðjohnsen (ISL) | L | José Luis de Frutos (ESP) | José Luis de Frutos (ESP) | W | | | | | | |
| Fritz Kaiser (LIE) | Fritz Kaiser (LIE) | L | Walter Huber (VEN) | Walter Huber (VEN) | L | | | | | | |
| Walter Huber (VEN) | Walter Huber (VEN) | W | | | | José Luis de Frutos (ESP) | José Luis de Frutos (ESP) | L | | | |
| Valeriy Dvoinikov (URS) | Valeriy Dvoinikov (URS) | W | | | | Valeriy Dvoinikov (URS) | Valeriy Dvoinikov (URS) | W | | | |
| Ricardo Elmont (SUR) | Ricardo Elmont (SUR) | L | Valeriy Dvoinikov (URS) | Valeriy Dvoinikov (URS) | W | | | | | | |
| Pedro Santos (PUR) | Pedro Santos (PUR) | L | Süheyl Yesilnur (TUR) | Süheyl Yesilnur (TUR) | L | | | | | | |
| Süheyl Yesilnur (TUR) | Süheyl Yesilnur (TUR) | W | | | | | | | | | |

#### Pool B

| Round of 32 | Round of 32 | Round of 32 | Round of 16 | Round of 16 | Round of 16 | Quarterfinal | Quarterfinal | Quarterfinal | Semifinal | Semifinal | Semifinal |
| Endre Kiss (HUN) | Endre Kiss (HUN) | W | | | | | | | | | |
| Rainer Fischer (CAN) | Rainer Fischer (CAN) | L | Endre Kiss (HUN) | Endre Kiss (HUN) | L | | | | | | |
| Park Young-chul (KOR) | Park Young-chul (KOR) | WO | Park Young-chul (KOR) | Park Young-chul (KOR) | W | | | | | | |
| Bertil Ström (SWE) | Bertil Ström (SWE) | DNS | | | | Park Young-chul (KOR) | Park Young-chul (KOR) | L | | | |
| Kiril Petkov (BUL) | Kiril Petkov (BUL) | DNS | | | | Isamu Sonoda (JPN) | Isamu Sonoda (JPN) | W | | | |
| Jong In-chol (PRK) | Jong In-chol (PRK) | WO | Jong In-chol (PRK) | Jong In-chol (PRK) | L | | | | | | |
| Paul Buganey (AUS) | Paul Buganey (AUS) | L | Isamu Sonoda (JPN) | Isamu Sonoda (JPN) | W | | | | | | |
| Isamu Sonoda (JPN) | Isamu Sonoda (JPN) | W | | | | | | | Isamu Sonoda (JPN) | Isamu Sonoda (JPN) | W |
| Fred Marhenke (FRG) | Fred Marhenke (FRG) | W | | | | | | | Fred Marhenke (FRG) | Fred Marhenke (FRG) | L |
| Gandolgoryn Batsükh (MGL) | Gandolgoryn Batsükh (MGL) | L | Fred Marhenke (FRG) | Fred Marhenke (FRG) | W | | | | | | |
| El Arabi El Jamali (MAR) | El Arabi El Jamali (MAR) | DNS | Jean-Paul Coche (FRA) | Jean-Paul Coche (FRA) | L | | | | | | |
| Jean-Paul Coche (FRA) | Jean-Paul Coche (FRA) | WO | | | | Fred Marhenke (FRG) | Fred Marhenke (FRG) | W | | | |
| Christop Tchagou (CMR) | Christop Tchagou (CMR) | DNS | | | | Jurek Jatowitt (AUT) | Jurek Jatowitt (AUT) | L | | | |
| Jurek Jatowitt (AUT) | Jurek Jatowitt (AUT) | WO | Jurek Jatowitt (AUT) | Jurek Jatowitt (AUT) | W | | | | | | |
| Abinem Dara (MLI) | Abinem Dara (MLI) | DNS | Teimoc Jonston-Ono (USA) | Teimoc Jonston-Ono (USA) | L | | | | | | |
| Teimoc Jonston-Ono (USA) | Teimoc Jonston-Ono (USA) | WO | | | | | | | | | |

### Repechages
#### Repechage A

| Repechage | Repechage | Repechage | Repechage semifinal | Repechage semifinal | Repechage semifinal | Repechage final | Repechage final | Repechage final |
| Ricardo Elmont (SUR) | Ricardo Elmont (SUR) | L | | | | | | |
| Süheyl Yesilnur (TUR) | Süheyl Yesilnur (TUR) | W | Süheyl Yesilnur (TUR) | Süheyl Yesilnur (TUR) | L | | | |
| | | | José Luis de Frutos (ESP) | José Luis de Frutos (ESP) | W | | | |
| | | | | | | José Luis de Frutos (ESP) | José Luis de Frutos (ESP) | L |
| | | | | | | Slavko Obadov (YUG) | Slavko Obadov (YUG) | W |

#### Repechage B

| Repechage | Repechage | Repechage | Repechage semifinal | Repechage semifinal | Repechage semifinal | Repechage final | Repechage final | Repechage final |
| Paul Buganey (AUS) | Paul Buganey (AUS) | W | | | | | | |
| Jong In-chol (PRK) | Jong In-chol (PRK) | L | Paul Buganey (AUS) | Paul Buganey (AUS) | L | | | |
| | | | Park Young-chul (KOR) | Park Young-chul (KOR) | W | | | |
| | | | | | | Park Young-chul (KOR) | Park Young-chul (KOR) | W |
| | | | | | | Fred Marhenke (FRG) | Fred Marhenke (FRG) | L |

### Finals

| Semi-finals | Semi-finals | Final | Final |
| Slavko Obadov (YUG) | L |
| Valeriy Dvoinikov (URS) | W | | |
| Valeriy Dvoinikov (URS) | W | Valeriy Dvoinikov (URS) | L |
| | | Isamu Sonoda (JPN) | W |
| Isamu Sonoda (JPN) | W | Isamu Sonoda (JPN) | W |
| Fred Marhenke (FRG) | L | | |

## Final classification

| Rank | Name | Country |
| | Isamu Sonoda | Japan |
| | Valeriy Dvoinikov | Soviet Union |
| | Park Young-chul | South Korea |
| | Slavko Obadov | Yugoslavia |
| 5T | José Luis de Frutos | Spain |
| 5T | Fred Marhenke | West Germany |
| 7T | Paul Buganey | Australia |
| 7T | Süheyl Yesilnur | Turkey |
| 9T | Ricardo Elmont | Suriname |
| 9T | Jong In-chol | North Korea |
| 11T | Brian Jacks | Great Britain |
| 11T | Jurek Jatowitt | Austria |
| 13T | Carlos Motta | Brazil |
| 13T | Walter Huber | Venezuela |
| 13T | Jean-Paul Coche | France |
| 13T | Endre Kiss | Hungary |
| 13T | Teimoc Jonston-Ono | United States |
| 13T | Adam Adamczyk | Poland |
| 19T | Assane N'Doye | Senegal |
| 19T | Ibrahim Muzaffer | Kuwait |
| 19T | Daniel Guldemont | Belgium |
| 19T | Viðar Guðjohnsen | Iceland |
| 19T | Fritz Kaiser | Liechtenstein |
| 19T | Pedro Santos | Puerto Rico |
| 19T | Rainer Fischer | Canada |
| 19T | Gandolgoryn Batsükh | Mongolia |
| 19T | Detlef Ultsch | East Germany |