Judo at the 1988 Summer Olympics – Men's 78 kg
The men's 78 kg competition in judo at the 1988 Summer Olympics in Seoul was held on 28 September at the Jangchung Gymnasium. The gold medal was won by Waldemar Legień of Poland.Results
Pool A
Pool B
Repechages
Final
| Rank | Name | Country |
| 1 | Waldemar Legień | |
| 2 | Frank Wieneke | |
| 3T | Torsten Bréchôt | |
| 3T | Bashir Varaev | |
| 5T | Kevin Doherty | |
| 5T | Pascal Tayot | |
| 7T | Gastón García | |
| 7T | Vítorino González | |
| 9T | Walid Mohamed Hussain | |
| 9T | Lars Adolfsson | |
| 11 | Peter Reiter | |
| 12T | Rodnomyn Erkhembayar | |
| 12T | Jukka-Pekka Metsola | |
| 14T | Hirotaka Okada | |
| 14T | Neil Adams | |
| 14T | Hisham Al-Sharaf Rashad | |
| 14T | Temel Çakiroglu | |
| 14T | Patrick Matangi | |
| 14T | Lam Lap Hing | |
| 20T | Luis Ochoa | |
| 20T | Ricardo José Boy | |
| 20T | Filip Leščak | |
| 20T | John Baylon | |
| 20T | Pedro Cristóvão | |
| 20T | Carlos Huttich | |
| 20T | Mariano Aquino | |
| 20T | Jason Morris | |
| 20T | Luis Val | |
| 20T | Kilmar Campos | |
| 20T | Tsay Yow-tayn | |
| 20T | Magnus Büchel | |
| 20T | Aly Attyé | |
| 20T | An Byeong-geun | |
| 34T | Olivier Schaffter | |
| 34T | James Kihara | |
| 34T | Mamudu Adamu | |
| 34T | Fadi Saikali | |
| 34T | Károly Németh | |
| 34T | Ezequiel Paraguassu | |
| 34T | Johan Laats | |
| 34T | Simione Kuruvoli | |
