The men's 2003 World Amateur Boxing Championships were held in Bangkok, Thailand, from July 6 to July 13. The competition was organised by the world governing body for amateur boxing AIBA.

Event	Gold	Silver	Bronze
Light flyweight (–48 kilograms)	Sergey Kazakov Russia	Zou Shiming People's Republic of China	Nauman Karim Pakistan Harry Tañamor Philippines
Flyweight (–51 kilograms)	Somjit Jongjohor Thailand	Jérôme Thomas France	Alexandar Alexandrov Bulgaria Rustamhodza Rahimov Germany
Bantamweight (–54 kilograms)	Aghasi Mammadov Azerbaijan	Gennadiy Kovalev Russia	Detelin Dalakliev Bulgaria Bahodirjon Sultonov Uzbekistan
Featherweight (–57 kilograms)	Galib Jafarov Kazakhstan	Vitali Tajbert Germany	Abdusalom Khasanov Tajikistan Cho Seok-Hwan South Korea
Lightweight (–60 kilograms)	Mario Kindelán Cuba	Pichai Sayotha Thailand	Martin Dressen Germany Gyula Kate Hungary
Light welterweight (–64 kilograms)	Willy Blain France	Alexandr Maletin Russia	Manus Boonjumnong Thailand Tofik Ahmadov Azerbaijan
Welterweight (–69 kilograms)	Lorenzo Aragón Cuba	Sherzod Husanov Uzbekistan	Andre Berto United States Ruslan Khairov Azerbaijan
Middleweight (–75 kilograms)	Gennady Golovkin Kazakhstan	Oleg Mashkin Ukraine	Yordanis Despaigne Cuba Nikola Sjekloća Serbia and Montenegro
Light heavyweight (–81 kilograms)	Yevgeniy Makarenko Russia	Magomed Aripgadjiev Belarus	Rudolf Kraj Czech Republic Aleksy Kuziemski Poland
Heavyweight (–91 kilograms)	Odlanier Solis Cuba	Aleksandr Alekseyev Russia	Steffen Kretschmann Germany Viktor Zuyev Belarus
Super heavyweight (+91 kilograms)	Alexander Povetkin Russia	Pedro Carrión Cuba	Sebastian Köber Germany Rustam Saidov Uzbekistan

Rank	Nation	Gold	Silver	Bronze	Total
1	Russia (RUS)	3	3	0	6
2	Cuba (CUB)	3	1	1	5
3	Kazakhstan (KAZ)	2	0	0	2
4	Thailand (THA)	1	1	1	3
5	France (FRA)	1	1	0	2
6	Azerbaijan (AZE)	1	0	2	3
7	Germany (GER)	0	1	4	5
8	Uzbekistan (UZB)	0	1	2	3
9	Belarus (BLR)	0	1	1	2
10	China (CHN)	0	1	0	1
	Ukraine (UKR)	0	1	0	1
12	Bulgaria (BUL)	0	0	2	2
13	Czech Republic (CZE)	0	0	1	1
	Hungary (HUN)	0	0	1	1
	Pakistan (PAK)	0	0	1	1
	Philippines (PHI)	0	0	1	1
	Poland (POL)	0	0	1	1
	Serbia and Montenegro (SCG)	0	0	1	1
	South Korea (KOR)	0	0	1	1
	Tajikistan (TJK)	0	0	1	1
	United States (USA)	0	0	1	1
Totals (21 entries)		11	11	22	44

• Results
• USA Boxing