Wrestling at the 1988 Summer Olympics – Men's Greco-Roman 90 kg

The Men's Greco-Roman 90 kg at the 1988 Summer Olympics as part of the wrestling program were held at the Sangmu Gymnasium, Seongnam.

Tournament results
The wrestlers are divided into 2 groups. The winner of each group decided by a double-elimination system.
 * Legend
 * TF — Won by Fall
 * SP — Won by Superiority, 12-14 points difference, the loser with points
 * SO — Won by Superiority, 12-14 points difference, the loser without points
 * ST — Won by Technical Superiority, 15 points difference
 * PP — Won by Points, the loser with technical points
 * PO — Won by Points, the loser without technical points
 * P0 — Won by Passivity, scoring zero points
 * P1 — Won by Passivity, while leading by 1-11 points
 * PS — Won by Passivity, while leading by 12-14 points
 * PA — Won by Opponent Injury
 * DQ — Won by Forfeit
 * DNA — Did not appear
 * L — Losses
 * ER — Round of Elimination
 * CP — Classification Points
 * TP — Technical Points