| | Event type
Flyweight (≤58 kilograms), Men
| Date | 26 August 2004 | |
|---|---|---|
| Status | Olympic | |
| Location | Kleisto Gymnastirio Falirou, Olympiako Syngrotima Papaliakis Zonis Falirou, Faliro | |
| Participants | 16 from 16 countries | |
| Format | Single-elimination tournament. All fighters losing to the finalists in each pool advance to repêchage tournament for the bronze medal. | |
Chu Mu-Yen (TPE) had won the World Championship in 2003, and was runner-up in 2001 in the finweight (54 kg.) division. He was the clear favorite in this class at Athína. He won his opening match by TKO, and his second-round match, 9-1. In the semi-finals, he faced Tamer Salah of Egypt, who pushed him. Chu scored a point in the last minute of the match to win 5-4. His final victory over Mexico’s Óscar Salazar was quite easy. Salah won the bronze medal.
| Pos | Nr | Fighter | NOC | |||
|---|---|---|---|---|---|---|
| 1 | 28 | Chu Mu-Yen |  TPE | Gold | ||
| 2 | 24 | Óscar Salazar |  MEX | Silver | ||
| 3 | 18 | Tamer Salah |  EGY | Bronze | ||
| 4 | 19 | Juan Antonio Ramos |  ESP | |||
| =5 | 17 | Gabriel Mercedes |  DOM | |||
| =5 | 30 | Nguyễn Quốc Huân |  VIE | |||
| =7 | 29 | Oleksandr Shaposhnyk |  UKR | |||
| =7 | 23 | Ezedin Tlish |  LBA | |||
| =9 | 21 | Mikhail Mouroutsos |  GRE | |||
| =9 | 20 | Paul Green |  GBR | |||
| =11 | 16 | Marcel Wenceslau |  BRA | |||
| =11 | 27 | Ussadate Sutthikunkarn |  THA | |||
| =11 | 25 | Tshomlee Go |  PHI | |||
| =11 | 22 | Satriyo Rahadhani |  INA | |||
| =11 | 26 | Seyfula Magomedov |  RUS | |||
| =11 | 31 | Akram Al-Noor |  YEM |
Round One (26 August 2004 — 11:12)
Winner of each match advanced to the quarter-finals.
| Match #1 | Tamer Salah | EGY | Marcel Wenceslau | BRA | Final Score (10 - 2) |
| Match #2 | Mikhail Mouroutsos | GRE | Ussadate Sutthikunkarn | THA | Final Score (5 - 2) |
| Match #3 | Chu Mu-Yen | TPE | Ezedin Tlish | LBA | Referee Stopped Contest (Round 1, 1:15) |
| Match #4 | Juan Antonio Ramos | ESP | Tshomlee Go | PHI | Final Score (7 - 6) |
| Match #5 | Paul Green | GBR | Satriyo Rahadhani | INA | Final Score (6 - 5) |
| Match #6 | Nguyễn Quốc Huân | VIE | Seyfula Magomedov | RUS | Final Score (12 - 10) |
| Match #7 | Oleksandr Shaposhnyk | UKR | Akram Al-Noor | YEM | Final Score (7 - 5) |
| Match #8 | Óscar Salazar | MEX | Gabriel Mercedes | DOM | Final Score (10 - 1) |
Quarter-Finals (26 August 2004 — 13:12)
Winner of each match advanced to the semi-finals.
| Match #1 | Tamer Salah | EGY | Mikhail Mouroutsos | GRE | Final Score (8 - 2) |
| Match #2 | Chu Mu-Yen | TPE | Juan Antonio Ramos | ESP | Final Score (9 - 1) |
| Match #3 | Nguyễn Quốc Huân | VIE | Paul Green | GBR | Final Score (4 - 2) |
| Match #4 | Óscar Salazar | MEX | Oleksandr Shaposhnyk | UKR | Final Score (6 - 2) |
Semi-Finals (26 August 2004 — 16:24)
Winner of each match advanced to the final round.
| Match #1 | Chu Mu-Yen | TPE | Tamer Salah | EGY | Final Score (5 - 4) |
| Match #2 | Óscar Salazar | MEX | Nguyễn Quốc Huân | VIE | Final Score (8 - 0) |
Repêchage Round One (26 August 2004)
Winner of each match advanced to the repêchage round two.
| Match #1 | Tamer Salah | EGY | Bye | ||
| Match #2 | Gabriel Mercedes | DOM | Oleksandr Shaposhnyk | UKR | Walkover |
| Match #3 | Juan Antonio Ramos | ESP | Ezedin Tlish | LBA | Walkover |
| Match #4 | Nguyễn Quốc Huân | VIE | Bye |
Repêchage Round Two (26 August 2004 — 18:12)
Winner of each match advanced to the bronze medal match.
| Match #1 | Tamer Salah | EGY | Gabriel Mercedes | DOM | Final Score (5 - 0) |
| Match #2 | Juan Antonio Ramos | ESP | Nguyễn Quốc Huân | VIE | Final Score (8 - 0) |
Final Round (26 August 2004 — 19:05)
| Match 1/2 | Chu Mu-Yen | TPE | Óscar Salazar | MEX | Final Score (5 - 1) |
| Match 3/4 | Tamer Salah | EGY | Juan Antonio Ramos | ESP | Final Score (7 - 1) |