The United States of America (USA), represented by the United States Olympic & Paralympic Committee (USOPC), competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July 2020 to 9 August 2020, the Games were postponed to July 23 to August 8, 2021, due to the COVID-19 pandemic. U.S. athletes have appeared in every Summer Olympic Games of the modern era, with the exception of the 1980 Summer Olympics in Moscow, which the U.S. boycotted in protest of the Soviet invasion of Afghanistan. The opening ceremony flag-bearers for the United States were baseball player Eddy Alvarez and basketball player Sue Bird. Javelin thrower Kara Winger was the flag-bearer for the closing ceremony. For the third consecutive time in the Summer Olympics, the United States was represented by more female than male athletes (285 men and 330 women).

The country finished the Games with 113 medals, the most amongst all nations: 39 gold, 41 silver, and 33 bronze. These individual totals were each the highest of the Games, after a final-day tally of three gold medals (women's basketball, women's omnium, and women's volleyball) surpassed China's total of 38 golds. Overall, the medal total was slightly lower than five years prior in Rio de Janeiro, where the United States won 46 gold and 121 total medals.

As Los Angeles will be the host city of the 2028 Summer Olympics, the United States, along with France, which is hosting the 2024 Summer Olympics in Paris, marched in the opening ceremony just before the host nation Japan.

Medalists

The following U.S. competitors won medals at the games. In the discipline sections below, the medalists' names are bolded.

|style="text-align:left;width:78%;vertical-align:top"| MedalNameSportEventDateFencingWomen's foilShootingMen's 10 m air rifleSwimmingMen's 400 m individual medleyTaekwondoWomen's −57 kgBowe BeckerBrooks CurryCaeleb DresselBlake PieroniSwimmingMen's 4 × 100 m freestyle relayShootingMen's skeetShootingWomen's skeetSurfingWomen's shortboardSwimmingWomen's 100 m breaststrokeBasketballWomen's 3x3 tournamentSwimmingWomen's 1500 m freestyleGymnasticsWomen's artistic individual all-aroundSwimmingMen's 100 m freestyleSwimmingMen's 800 m freestyleSwimmingMen's 100 m butterflySwimmingWomen's 800 m freestyleGolfMen'sSwimmingMen's 50 m freestyleSwimmingMen's 1500 m freestyleZach AppleHunter ArmstrongCaeleb DresselRyan MurphyBlake PieroniTom ShieldsAndrew WilsonSwimmingMen's 4 × 100 m medley relayAthleticsWomen's discus throwGymnasticsWomen's floorAthleticsWomen's 800 mWrestlingWomen's freestyle 68 kgAthleticsWomen's 400 m hurdlesAthleticsMen's shot putAthleticsWomen's pole vaultCanoeingWomen's C-1 200 mWrestlingMen's freestyle 86 kgVolleyballWomen's beach volleyball tournamentWrestlingMen's freestyle 125 kgMichael CherryBryce DeadmonMichael NormanVernon NorwoodRandolph RossTrevor StewartAthleticsMen's 4 × 400 m relayAllyson FelixLynna IrbyWadeline JonathasSydney McLaughlinAthing MuDalilah MuhammadKaylin WhitneyAthleticsWomen's 4 × 400 m relayBasketballMen's 5x5 tournamentGolfWomen'sWater poloWomen's tournamentBasketballWomen's 5x5 tournamentCyclingWomen's omniumVolleyballWomen's tournamentSwimmingMen's 400 m individual medleySwimmingWomen's 400 m individual medleySwimmingWomen's 400 m freestyleDelaney SchnellDivingWomen's synchronized 10 m platformSteffen PetersSabine Schut-KeryEquestrianTeam dressageJordan ChilesSunisa LeeGrace McCallumGymnasticsWomen's artistic team all-aroundMary TuckerShootingMixed 10 m air rifleSoftballWomen's tournamentMichael HixonDivingMen's synchronized 3 m springboardSwimmingWomen's 1500 m freestyleSwimmingWomen's 200 m individual medleyShootingWomen's trapSwimmingWomen's 200 m butterflyPaige MaddenKatie McLaughlinKatie LedeckyAllison SchmittBella SimsSwimmingWomen's 4 × 200 m freestyle relaySwimmingMen's 200 m backstrokeSwimmingWomen's 200 m breaststrokeKevin McDowellMorgan PearsonKatie ZaferesTriathlonMixed relayAthleticsMen's 100 mAthleticsWomen's shot putCyclingWomen's BMX freestyleGymnasticsWomen's vaultClaire CurzanTorri HuskeLydia JacobyLilly KingRegan SmithAbbey WeitzeilRhyan WhiteSwimmingWomen's 4 × 100 m medley relayWeightliftingWomen's −76 kgAthleticsWomen's 100 m hurdlesWrestlingWomen's freestyle 76 kgAthleticsMen's 400 m hurdlesAthleticsMen's pole vaultAthleticsWomen's long jump AthleticsMen's 200 m AthleticsWomen's 400 m hurdles AthleticsWomen's 3000 m steeplechaseAthleticsMen's 110 m hurdlesAthleticsMen's shot putBoxingMen's featherweightSport climbingMen's combinedEnglish GardnerAleia HobbsJavianne OliverJenna PrandiniGabrielle ThomasAthleticsWomen's 4 × 100 metres relayBaseballMen's tournamentJessica SpringsteenMcLain WardEquestrianTeam jumpingWrestlingMen's freestyle 97 kgBoxingMen's lightweightBoxingMen's super heavyweightSkateboardingMen's streetSwimmingMen's 400 m freestyleSwimmingWomen's 400 m individual medleyCatie DeLoofNatalie HindsSimone ManuelAllison SchmittOlivia SmoligaAbbey WeitzeilSwimmingWomen's 4 × 100 m freestyle relaySwimmingMen's 100 m backstrokeSwimmingWomen's 100 m backstrokeSwimmingWomen's 100 m breaststrokeTriathlonWomen'sSwimmingWomen's 200 m individual medleySwimmingWomen's 200 m butterflySwimmingWomen's 200 m breaststrokeKendall EllisElija GodwinLynna IrbyTaylor MansonVernon NorwoodTrevor StewartKaylin WhitneyAthleticsMixed 4 × 400 m relayMadelynn BernauShootingMixed trap teamDivingWomen's 3 m springboardNick ItkinAlexander MassialasGerek MeinhardtFencingMen's team foilGymnasticsWomen's uneven barsWeightliftingWomen's +87 kgAthleticsWomen's 200 mAthleticsWomen's 800 mMegan JastrabEmma WhiteLily WilliamsCyclingWomen's team pursuitGymnasticsWomen's balance beam AthleticsMen's 200 mBoxingWomen's welterweightFootballWomen's tournamentSkateboardingMen's parkWrestlingMen's freestyle 57 kgWrestlingWomen's freestyle 57 kg AthleticsMen's 5000 m AthleticsWomen's 400 mKarateMen's kataWrestlingMen's freestyle 74 kgAthleticsWomen's marathon Wrestling Women's freestyle 50 kg |style="text-align:left;width:22%;vertical-align:top"|

+Medals by sportSportTotalSwimming1110930Athletics712726Wrestling3249Shooting3216Basketball3003Gymnastics2226Golf2002Volleyball2002Cycling1113Fencing1012Canoeing1001Surfing1001Taekwondo1001Water polo1001Boxing0314Diving0213Equestrian0202Triathlon0112Weightlifting0112Baseball0101Softball0101Sport climbing0101Skateboarding0022Football0011Karate0011Total394133113

+Medals by dayDayDate Total1July 24 0 0 002July 25 4 2 4103July 26 3 1 044July 27 2 5 4115July 28 2 3 166July 29 3 3 177July 30 0 2 138July 31 2 1 259August 1 4 6 31310August 2 2 2 1511August 3 2 3 4912August 4 1 3 2613August 5 4 4 41214August 6 2 1 4715August 7 5 3 21016August 8 3 2 05Total394133113

+Medals by genderGenderTotalPercentageFemale2322216658.4%Male1615104136.3%Mixed04265.3%Total394133113100%

+Multiple medalistsNameSportTotalCaeleb DresselSwimming5005Katie LedeckySwimming2204Sunisa LeeGymnastics1113Ryan MurphySwimming1113Lilly KingSwimming0213Regan SmithSwimming0213Zach AppleSwimming2002Bobby FinkeSwimming2002Sydney McLaughlinAthletics2002Athing MuAthletics2002Blake PieroniSwimming2002Rai BenjaminAthletics1102Lydia JacobySwimming1102Dalilah MuhammadAthletics1102Bryce DeadmonAthletics1012Kendall EllisAthletics1012Allyson FelixAthletics1012Lynna IrbyAthletics1012Vernon NorwoodAthletics1012Trevor StewartAthletics1012Jennifer ValenteCycling1012Kaylin WhitneyAthletics1012Simone BilesGymnastics0112Erika BrownSwimming0112Allison SchmittSwimming0112Gabrielle ThomasAthletics0112Abbey WeitzeilSwimming0112Katie ZaferesTriathlon0112Hali FlickingerSwimming0022 Athletes who participated in the heats only.

Competitors The following is the list of number of competitors in the Games, including game-eligible alternates in team sports. SportMenWomenTotalArchery 3 3 6Artistic swimming 2 2Athletics 63 65 128Badminton 3 1 4Baseball 24 24Basketball 12 16 28Boxing 5 5 10Canoeing 2 2 4Cycling 9 18 27Diving 5 6 11Equestrian 5 4 9Fencing 9 9 18Football (soccer) 0 18 18Golf 4 4 8Gymnastics 6 14 20Judo 1 3 4Karate 3 1 4Modern pentathlon 1 1 2Rowing 13 24 37Rugby sevens 12 12 24Sailing 6 7 13Shooting 11 9 20Skateboarding 6 6 12Softball 15 15Sport climbing 2 2 4Surfing 2 2 4Swimming 25 28 53Table tennis 3 3 6Tennis 6 6 12Taekwondo 0 2 2Triathlon 2 3 5Volleyball 16 16 32Water polo 13 13 26Weightlifting 4 4 8Wrestling 9 6 15 Total 285 330 615

Archery

One U.S. archer qualified for the men's individual recurve by reaching the quarterfinal stage and obtaining one of the four available spots at the 2019 World Archery Championships in 's-Hertogenbosch, Netherlands. Another U.S. archer secured a spot in the women's individual recurve by winning the mixed team title at the 2019 Pan American Games in Lima, Peru. The athletes were selected after the Olympic Trials. Four more U.S. archers were named to the roster for Tokyo 2020 after winning their places in the men's and women's team recurve at the 2021 Final Qualification Tournament in Paris, France.

Men AthleteEventRanking roundRound of 64Round of 32Round of 16QuarterfinalsSemifinalsFinal / ScoreSeedOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankBrady EllisonIndividual6822W 6–0W 6–0W 7–3L 3–7Did not advanceJack Williams65629L 4–6Did not advanceJacob Wukie64947W 7–1W 6–5L 3–7Did not advanceBrady EllisonJack WilliamsJacob WukieTeam19875colspan=2 W 6–0L 1–5Did not advance

Women AthleteEventRanking roundRound of 64Round of 32Round of 16QuarterfinalsSemifinalsFinal / ScoreSeedOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankMackenzie BrownIndividual6685W 6–2W 6–0W 6–2W 6–5L 5–6L 1–74Casey Kaufhold65317W 7–3L 2–6Did not advanceJennifer Mucino-Fernandez64924W 6–4L 4–6Did not advanceMackenzie BrownCasey KaufholdJennifer Mucino-FernandezTeam19703colspan=2 L 0–6Did not advance

Mixed AthleteEventRanking roundRound of 16QuarterfinalsSemifinalsFinal / ScoreSeedOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankMackenzie BrownBrady EllisonTeam13502 QL 4–5Did not advance

Artistic swimming

The United States fielded a squad of two artistic swimmers to compete in the women's duet event, by finishing fifth at the 2021 FINA Olympic Qualification Tournament in Barcelona, Spain.

AthleteEventFree routine (preliminary)Technical routineFree routine (final)PointsRankPointsTotal (technical + free)RankPointsTotal (technical + free)RankAnita AlvarezLindi SchroederDuet86.53331386.1960172.729313Did not advance

Athletics (track and field)

U.S. athletes achieved the entry standards, either by qualifying time or by world ranking, in the following track and field events (up to a maximum of 3 athletes in each event). The team was selected based on the results of the 2020 United States Olympic Trials (June 18 to 27, 2021) held in Eugene, Oregon.

Six marathon runners (three per gender) were the first set of U.S. track and field athletes selected for the Games by virtue of their top three finish at the Olympic Team Trials in Atlanta, Georgia on February 29, 2020.

Following the completion of the Olympic Trials, 128 athletes (63 men and 65 women) were named to the U.S. track and field team for the Games, with sprinter and multiple medalist Allyson Felix and marathon runner Abdihakem Abdirahman, the oldest US Olympic runner in history (aged 44), competing at their fifth Olympics and another sprinter Erriyon Knighton establishing himself as the youngest (aged 17) in nearly six decades. Apart from Felix and Knighton, the U.S. team also featured three Olympic champions from Rio 2016, namely middle-distance runner Matthew Centrowitz, Jr. (men's 1500 m), hurdler Dalilah Muhammad, and shot put world record holder Ryan Crouser.