Hungary competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. Hungarian athletes have competed at every Summer Olympic Games in the modern era, except the 1920 Summer Olympics in Antwerp, and the 1984 Summer Olympics in Los Angeles because of the Soviet boycott. The Hungarian Olympic Committee (, MOB) sent the nation's smallest delegation to the Games since 1956 to London. A total of 159 athletes, 97 men and 62 women, competed in 18 sports.

Hungary originally left London with a total of 17 medals (8 gold, 4 silver, and 5 bronze), finishing tenth in the overall medal standings. Almost a third of the medals were awarded to the team in sprint canoeing, along with three in swimming, and two each in judo and wrestling. Three Hungarian athletes, all from sprint canoeing, won more than a single Olympic medal in London. For the first time since 1996, Hungary did not win an Olympic medal in men's water polo.

Among the nation's medalists were gymnast Krisztián Berki, who became the fourth Hungarian to claim the title in men's pommel horse, 24 years after the last Hungarian winner, and hammer thrower Krisztián Pars, who narrowly missed out on a medal in Beijing. Katalin Kovács, who won gold and silver in London, emerged as the greatest Hungarian sprint kayaker in history, with a total of eight Olympic medals. Multiple-time European champion László Cseh, who won bronze in London, became one of the most successful Hungarian swimmers in history, with a total of five Olympic medals. Meanwhile, former Olympic silver medalist Dániel Gyurta set a world record to win the gold in men's breaststroke swimming. Éva Risztov, who retired from the pool after competing two events, became an Olympic champion in women's open water marathon.

On 7 November 2012, the International Olympic Committee stripped Uzbek wrestler Soslan Tigiev of his bronze medal after he tested positive for the prohibited substance methylhexaneamine. Gábor Hatos, who lost to Tigiev in the final repechage bout, was subsequently awarded the bronze medal.

Medalists

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Medal Name Sport Event Date Fencing Men's sabre Swimming Men's 200 m breaststroke Gymnastics Men's pommel horse Athletics Men's hammer throw Roland Kökény Canoeing Men's K-2 1000 m Danuta KozákKatalin KovácsKrisztina Fazekas Canoeing Women's K-4 500 m Canoeing Women's K-1 500 m Swimming Women's 10 km open water Judo Men's 66 kg Wrestling Men's Greco-Roman 66 kg Dávid TóthTamás KulifaiDániel Pauman Canoeing Men's K-4 1000 m Natasa Dusev-Janics Canoeing Women's K-2 500 m Judo Women's 48 kg Swimming Men's 200 m individual medley Wrestling Men's Greco-Roman 55 kg Canoeing Women's K-1 200 m Modern pentathlon Men's event Wrestling Men's freestyle 74 kg | width=22% align=left valign=top | Medals by sportSport TotalCanoeing 3 2 16Swimming 2 0 13Athletics 1 0 01Fencing 1 0 01Gymnastics 1 0 01Wrestling 0 1 23Judo 0 1 12Modern pentathlon 0 0 11 Total 8 4 6 18

Multiple medalistsNameSport TotalDanuta KozákCanoeing2002Katalin KovácsCanoeing1102Natasa Dusev-JanicsCanoeing0112

Delegation Magyar Olimpiai Bizottság (MOB) selected a team of 159 athletes, 97 men and 62 women, to compete in 18 sports; it was the nation's smallest delegation since 1956. Water polo and men's handball were the only team sports in which Hungary was represented. There was only a single competitor in road cycling, triathlon, and weightlifting. Swimming had the largest team by sport, with a total of 31 competitors.

The Hungarian team featured past Olympic champions, three of them defending their titles from Beijing (sprint kayakers Katalin Kovács and Nataša Dušev-Janić, and the men's national water polo team). Dusev-Janics, who won a total of three gold medals for Hungary, previously competed for the former Federal Republic of Yugoslavia in 2000. Six Hungarian athletes made their fifth Olympic appearances: sprint canoer and multiple-time Olympic champion Zoltán Kammerer, water polo player Tamás Kásás, table tennis player Krisztina Tóth, fencers Géza Imre and Aida Mohamed, and windsurfer Áron Gádorfalvi. Double trap shooter Richárd Bognár, at age 45, was the oldest athlete in the team, while butterfly swimmer Liliána Szilágyi was the youngest at age 15. Péter Biros, who led his water polo team to the gold medal in three consecutive Olympic Games, was the nation's flag bearer at the opening ceremony.

Other notable Hungarian athletes included swimmer and triple Olympic silver medalist László Cseh, pommel horse gymnast and two-time defending world champion Krisztián Berki, hammer thrower and multiple-time World Challenge champion Krisztián Pars, and sabre fencer Áron Szilágyi.

The following is the list of number of competitors participating in the Games:

| width=75% align=left valign=top | SportMenWomenTotalAthletics 10 8 18Boxing 3 0 3Canoeing 8 5 13Cycling 2 1 3Diving 0 2 2Fencing 2 2 4Gymnastics 2 1 3Handball 16 0 16Judo 4 4 8Modern pentathlon 2 2 4Rowing 4 0 4Sailing 2 1 3Shooting 2 1 3Swimming 17 14 31Synchronized swimming 0 2 2Table tennis 2 2 4Tennis 0 2 2Triathlon 0 1 1Water polo 13 13 26Weightlifting 1 0 1Wrestling 6 1 7 Total 97 62 159 | width=25% align=left valign=top |

Medals by dateDayDate TotalDay 128 July0011Day 229 July1102Day 330 July0000Day 431 July0000Day 51 August1001Day 62 August001 1Day 73 August0000Day 84 August0000Day 95 August2013Day 106 August0000Day 117 August0101Day 128 August2002Day 139 August2204Day 1410 August0000Day 1511 August0022Day 1612 August0000 –7 November0011 Total 8 4 6 18

Athletics

Hungarian 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):

Men Track & road events AthleteEventHeatSemifinalFinalResultRankResultRankResultRankBalázs Baji110 m hurdles13.765Did not advanceMarcell Deák-Nagy400 m46.174Did not advanceMáté Helebrandt20 km walk colspan=4 1:23:3232Tamás Kazi800 m1:47.10 SB6Did not advanceDániel Kiss110 m hurdles13.626Did not advanceTamás KovácsMarathoncolspan=4 2:27:4872Albert Minczér3000 m steeplechase8:40.74 SB11colspan=2 Did not advance

Field events AthleteEventQualificationFinalDistancePositionDistancePositionLajos KürthyShot put19.6521Did not advanceKrisztián ParsHammer throw79.371 Q80.59

Combined events – Decathlon AthleteEvent 100 m 400 m 1500 mFinalRankAttila SzabóResult11.156.9613.931.9050.8314.9245.144.60 =PB58.844:53.81758124Points827804724714777859770790720596

Women Track & road events AthleteEventFinalResultRankZsófia ErdélyiMarathon2:44:4592Anikó Kálovics2:45:5595Viktória Madarász20 km walk1:34:4841Beáta RakonczaiMarathon2:41:2085

Field events AthleteEventQualificationFinalDistancePositionDistancePositionVanda JuhászJavelin throw50.0136Did not advanceAnita MártonShot put17.4824Did not advanceÉva OrbánHammer throw68.6417Did not advance

Combined events – Heptathlon AthleteEvent 200 m 800 mFinalRankGyörgyi FarkasResult14.331.8013.5525.726.0746.522:17.83601322Points932978764822871793853

Boxing

Hungary has so far qualified boxers for the following events

Men AthleteEventRound of 32Round of 16QuarterfinalsSemifinalsFinalOppositionResultOppositionResultOppositionResultOppositionResultOppositionResultRankMiklós VargaLightweightL 12–20Did not advanceGyula KátéLight welterweightW 16–10L 14–20Did not advanceZoltán HarcsaMiddleweightW 16–13W 16–7L 10–14Did not advance

Canoeing

Sprint Hungary has qualified boats for the following events

Men AthleteEventHeatsSemifinalsFinalTimeRankTimeRankTimeRankMiklós DudásK-1 200 m35.3233 Q35.9933 FA36.8306Attila VajdaC-1 200 m44.7615 Q42.970FB44.46611C-1 1000 m3:59.8532 Q3:52.3652 FA3:50.9266Rudolf DombiRoland KökényK-2 1000 m3:11.3931 FAcolspan=2 3:09.646Zoltán KammererTamás KulifaiDániel PaumanDávid TóthK-4 1000 m2:54.1531 FAcolspan=2 2:55.699

Women AthleteEventHeatsSemifinalsFinalTimeRankTimeRankTimeRankNataša Dušev-JanićK-1 200 m41.221 OB1 Q40.5701 FA45.128Danuta KozákK-1 500 m1:52.8281 Q1:50.4691 FA1:51.456Nataša Dušev-JanićKatalin KovácsK-2 500 m1:43.9841 Q1:41.6132 FA1:43.278Krisztina FazekasKatalin KovácsDanuta KozákGabriella SzabóK-4 500 m1:35.7691 FAcolspan=2 1:30.827 Legend: FA = Qualify to final (medal); FB = Qualify to final B (non-medal); OB = Olympic Best

Cycling

Road AthleteEventTimeRankKrisztián LovassyMen's road raceDid not finish

Mountain biking AthleteEventTimeRankAndrás PartiMen's cross-countryDid not finishBarbara BenkóWomen's cross-country1:43:2427

Diving

Women AthleteEventPreliminariesSemifinalsFinalPointsRankPointsRankPointsRankNóra Barta3 m springboard257.7025Did not advanceFlóra Gondos266.4522Did not advance

Fencing

Hungary has qualified 4 fencers. Men AthleteEventRound of 64Round of 32Round of 16QuarterfinalSemifinalFinal / OppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankGéza ImreIndividual épéeW 15–8L 7–15Did not advanceÁron SzilágyiIndividual sabreW 15–1W 15–10W 15–13W 15–7W 15–8

Women AthleteEventRound of 64Round of 32Round of 16QuarterfinalSemifinalFinal / OppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankEmese SzászIndividual épéeL 12–15Did not advanceAida MohamedIndividual foilW 15–10L 7–8Did not advance

Gymnastics

Artistic Hungary has qualified three athletes. Men AthleteEventQualificationFinalApparatusTotalRankApparatusTotalRankKrisztián BerkiPommel horse15.033colspan=4 15.0335 Q16.066colspan=4 16.066Vid Hidvégi15.100colspan=4 15.1003 Q14.300colspan=4 14.3008

Women AthleteEventQualificationFinalApparatusTotalRankApparatusTotalRankDorina BöczögőAll-around13.20011.60013.16612.63350.59949Did not advance

Handball

Men's tournament

Group play

Quarterfinals

Semifinals

Bronze medal game

Judo

Men AthleteEventRound of 64Round of 32Round of 16QuarterfinalsSemifinalsRepechageFinal / OppositionResultOppositionResultOppositionResultOppositionResultOppositionResultOppositionResultOppositionResultRankMiklós Ungvári−66 kgW 1000–0000W 1000–0000W 0011–0002W 0010–0002W 0011–0000L 0001–0010László Csoknyai−81 kgW 0200–0001L 0002–0010Did not advanceTamás Madarász−90 kgL 0001–1001Did not advanceBarna Bor+100 kgW 0002–0001W 0100–0000L 0002–0011Did not advanceL 0001–0001 Did not advance7

Women AthleteEventRound of 32Round of 16QuarterfinalsSemifinalsRepechageFinal / OppositionResultOppositionResultOppositionResultOppositionResultOppositionResultOppositionResultRankÉva Csernoviczki−48 kgW 0010–0001L 0000–1001Did not advanceW 0210–0002W 1001–0001Hedvig Karakas−57 kgW 1000–0011W 000H–1001L 0000–0000 Did not advanceW 0011–0000L 0002–00115Anett Mészáros−70 kgL 0001–0001 Did not advanceAbigél Joó−78 kgW 0100–0000L 0010–0101Did not advanceW 1012–0022L 0001–10005

Modern pentathlon

Hungary has qualified two men and two women.

AthleteEventFencing(épée one touch)Swimming(200 m freestyle)Riding(show jumping)Combined: shooting/running(10 m air pistol)/(3000 m)Total pointsFinal rankResultsRankMP pointsTimeRankMP pointsPenaltiesRankMP pointsTimeRankMP PointsRóbert KaszaMen's20–15=68802:01.597134401120011:27.85322252567612Ádám Marosi20–15=68802:02.088133602120010:45.721224205836Sarolta KovácsWomen's11–24=326642:08.1111264680*3452012:43.69261948439633Adrienn Tóth24–1129762:17.3212115610024110013:07.33311852508424 * Did not finish

Rowing

Hungary has qualified the following boats.

Men AthleteEventHeatsRepechageSemifinalsFinalTimeRankTimeRankTimeRankTimeRankBéla SimonDomonkos SzéllPair6:46.185 R6:27.884Did not advanceZsolt HirlingTamás VargaLightweight double sculls6:39.804 R6:32.312 SA/B6:42.815 FB6:39.9811 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

Sailing

Hungary has qualified 1 boat for each of the following events

Men