Mexico competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's twentieth appearance at the Olympics, since its debut in 1900. Comité Olímpico Mexicano sent the nation's largest delegation to the Games since 1992. A total of 109 athletes, 59 men and 50 women, competed in 20 sports. Football was the only team-based sport in which Mexico had its representation in these Olympic Games. There was only a single competitor in fencing, shooting, and weightlifting.

The Mexican team featured three Olympic medalists from Sydney: race walker Noé Hernández, taekwondo jin Víctor Estrada, and diver Fernando Platas, who reprised his role to carry the national flag for the second time in the opening ceremony, after winning the silver in men's springboard.^[1] Along with Platas, race walkers Miguel Ángel Rodríguez and Germán Sánchez officially made their fourth Olympic appearance as the most experienced members of the team. Meanwhile, show jumper Gerardo Tazzer, who helped the Mexicans claim the bronze at the 1980 Summer Olympics in Moscow, sought his fourth Olympic bid in Athens after a sixteen-year absence, and was also the oldest athlete of the team at age 52.

Mexico left Athens with a total of four medals (three silver and one bronze), failing to win a gold for the first time since 1996. Half of these medals were awarded to the athletes in taekwondo. Sprinter Ana Guevara set the nation's historical milestone as the first ever female Mexican to claim an Olympic silver medal in track and field.^[2] Meanwhile, Belem Guerrero claimed a silver for the first time in the nation's Olympic cycling history, since the 1984 Summer Olympics in Los Angeles, since José Youshimatz took home the bronze in the men's points race.^[3]

Three Mexican archers qualified each for the men's individual archery, and a spot for the men's team.

More information Athlete, Event ...

Athlete	Event	Ranking round		Round of 64	Round of 32	Round of 16	Quarterfinals	Semifinals	Final / BM
		Score	Seed	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Rank
Jorge Pablo Chapoy	Men's individual	645	38	Xue Hf (CHN) L 153–162	Did not advance
Eduardo Magaña		646	35	Serrano (MEX) L 138–148	Did not advance
Juan René Serrano		651	30	Magaña (MEX) W 148–138	Galiazzo (ITA) L 163–164	Did not advance
Jorge Pablo Chapoy Eduardo Magaña Juan René Serrano	Men's team	1942	8	—		Netherlands (NED) L 234–244	Did not advance

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Mexican athletes have so far achieved qualifying standards in the following athletics events (up to a maximum of 3 athletes in each event at the 'A' Standard, and 1 at the 'B' Standard).^[4][5]

Men

Track & road events

Field events

Women

Track & road events

More information Athlete, Event ...

Athlete	Event	Heat		Quarterfinal		Semifinal		Final
		Result	Rank	Result	Rank	Result	Rank	Result	Rank
Liliana Allen	100 m	11.42	5 q	11.52	6	Did not advance
Adriana Fernández	10000 m	—						32:29.57	23
Ana Guevara	400 m	50.93	1 Q	—		50.15	1 Q	49.56
Victoria Palacios	20 km walk	—						1:36:07	34
Dulce María Rodríguez	5000 m	16:08.07	16	—				Did not advance
Angélica Sánchez	Marathon	—						2:49:04	46
Rosario Sánchez	20 km walk	—						DNF
Margarita Tapia	Marathon	—						2:46:14	38
Liliana Allen Mayra González Ana Guevara Magali Yanez	4 × 400 m relay	3:27.88 NR	5	—				Did not advance

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Field events

Mexico sent five boxers to Athens.

More information Athlete, Event ...

Athlete	Event	Round of 32	Round of 16	Quarterfinals	Semifinals	Final
		Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Rank
Raúl Castañeda	Light flyweight	Bye	Kazakov (RUS) L 16–41	Did not advance
Abner Mares Martínez	Bantamweight	Bedák (HUN) L 27–36	Did not advance
Juan de Dios Navarro	Light welterweight	Karimzhanov (KAZ) L 31–48	Did not advance
Alfredo Angulo	Middleweight	Lee (IRL) L 23–38	Did not advance
Ramiro Reducindo	Light heavyweight	Aripgadjiev (BLR) L 10–29	Did not advance

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Mexican divers qualified for eight individual spots at the 2004 Olympic Games. Two Mexican synchronized diving teams qualified through the 2004 FINA Diving World Cup.

Men

Women

Men

More information Athlete, Event ...

Athlete	Event	Round of 64	Round of 32	Round of 16	Quarterfinal	Semifinal	Final / BM
		Opposition Score	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Rank
Edgar Chumacero	Individual foil	Bye	Ota (JPN) L 9–15	Did not advance

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Three Mexican judoka (two men and one woman) qualified for the 2004 Summer Olympics.

More information Athlete, Event ...

Athlete	Event	Round of 32	Round of 16	Quarterfinals	Semifinals	Repechage 1	Repechage 2	Repechage 3	Final / BM
		Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Rank
Cristobal Aburto	Men's −60 kg	Fernández (CRC) W 0002–0000	Albarracín (ARG) L 0002–1000	Did not advance
José Goldschmied	Men's −90 kg	Demontfaucon (FRA) L 0000–1010	Did not advance
Vanessa Zambotti	Women's +78 kg	Bozhilova (BUL) W 1010–0000	Andolina (ITA) L 0000–1021	Did not advance

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Two Mexican athletes qualified to compete in the modern pentathlon event through the 2003 Pan American Games in Santo Domingo, Dominican Republic.

Mexican rowers qualified the following boats:

Women

Qualification Legend: FA=Final A (medal); FB=Final B (non-medal); FC=Final C (non-medal); FD=Final D (non-medal); FE=Final E (non-medal); FF=Final F (non-medal); SA/B=Semifinals A/B; SC/D=Semifinals C/D; SE/F=Semifinals E/F; QF=Quarterfinals; R=Repechage

Mexican sailors have qualified one boat for each of the following events.

Men

Women

M = Medal race; OCS = On course side of the starting line; DSQ = Disqualified; DNF = Did not finish; DNS= Did not start; RDG = Redress given

One Mexican shooter qualified to compete in the following events:

Men

Mexican swimmers earned qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard time, and 1 at the B-standard time):

Men

Women

Two Mexican synchronized swimmers qualified a spot in the women's duet.

Three Mexican taekwondo jin qualified for the following events.

More information Athlete, Event ...

Athlete	Event	Round of 16	Quarterfinals	Semifinals	Repechage 1	Repechage 2	Final / BM
		Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Rank
Óscar Salazar	Men's −58 kg	Mercedes (DOM) W 10–1	Shaposhnyk (UKR) W 6–2	Nguyen (VIE) W 8–0	Bye		Chu M-Y (TPE) L 1–5
Víctor Estrada	Men's −80 kg	Matos (CUB) W 8–7	López (USA) L 2–4	Did not advance	Rasheed (IRQ) W WO	Ahmadov (AZE) L 9–9 SUP	Did not advance	5
Iridia Salazar	Women's −57 kg	Delgado (COL) W 5–2	Kaydashova (UZB) W 7–7 SUP	Jang J-W (KOR) L 1–2	Bye	Corsi (ITA) W 3–2	Reyes (ESP) W 2–1

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Two Mexican triathletes qualified for the following events.

Mexico has qualified a single weightlifter.

• Mexico at the 2003 Pan American Games
• Mexico at the 2004 Summer Paralympics