Ireland competed at the 1984 Summer Olympics in Los Angeles, It went from July 28, 1984, to August 12, 1984 United States. 42 competitors, 28 men and 13 women, took part in 35 events in 10 sports.

Medalists

MedalNameSportEventDate Athletics Men's marathon 12 August

Archery

In Ireland's third appearance in archery competition at the Olympics, the nation was represented by two women. This included veteran Hazel Greene.

Women's Individual Competition: Hazel Greene — 2440 points (→ 20th place) Mary Vaughan — 2298 points (→ 39th place)

Athletics

Track +NameEventHeatSemifinalFinalTimeRankTimeRankTimeRankMarcus O'SullivanMen's 800m1:46.855Did Not AvdanceMen's 1500m3:49.653 Q3:39.409Did Not AdvancePaul Donovan3:45.704Did Not AdvanceFrank O'Mara3:41.764Ray FlynnMen's 5000m13:46.844 Q13:40.744 Q13:34.5011John TreacyMen's 10,000m28:18.135 Q colspan="2" 28:28.689Liam O'BrienMen's 3000m Steeplechase8:31.898 q8:34.9011Did Not AdvanceJohn TreacyMen's Marathon colspan="4" rowspan="3" 2:09:56Jerry Kiernan2:12:209Dick Hooper2:24:4151Caroline O'SheaWomen's 800m2:03.602 Q2:02.704 Q2:00.778Roisin SmythWomen's 3000m9:01.698 colspan="2" rowspan="2" Did Not AdvanceMonica Joyce8:54.345Mary ParrWomen's 400m Hurdles1:01.867Did Not AvdanceRegina JoyceWomen's Marathon colspan="4" rowspan="2" 2:37:5723Carey May2:41:2728

Field +NameEventQualificationFinalMarkRankMarkRankDeclan HegartyMen's Hammer Throw70.5617Did Not AdvanceConor McCullough65.5622Patricia WalshWomen's Discus Throw54.4210 Q55.389

Boxing

Men's Light Flyweight (– 48 kg) Gerard Hawkins First Round — Bye Second Round — Lost to Salvatore Todisco (ITA), 0:5

Men's Bantamweight (– 54 kg) Phillip Sutcliffe First Round — Bye Second Round — Lost to Maurizio Stecca (ITA), 0:5

Canoeing

AthleteEventHeatRepechageSemifinalFinalTimeRankTimeRankTimeRankTimeRankIan PringleK-1 500m2:01.105 R1:57.924 SF1:56.066Did not AdvanceK-1 1000 m4:09.215 R4:07.343 SF4:02.815Did not Advance

Cycling

Five cyclists represented Ireland in 1984.

Individual road race Martin Earley – 19th Paul Kimmage – 27th Gary Thomson – 39th Séamus Downey – 43rd

Team time trial – 16th Philip Cassidy Martin Earley Paul Kimmage Gary Thomson

Equestrianism

Eventing AthleteHorseEventDressageCross-countryJumpingTotalFaultsFaultsFaultsFaultsRankSarah GordonRathkennyIndividual74.2020.005.0099.2023David FosterAughatore77.2042.000.75119.9527Fiona WentgesBallylusky72.6056.8015.00144.4029Margaret TollertonIpi Tombi87.80DNFDNSDNFDNFSarah Gordon David Foster Fiona Wentges Margaret Tollertonas aboveTeam224.00118.8020.75363.559

Jumping AthleteHorseEventRound 1Round 2TotalFaultsRankFaultsRankFaultsRankGerry MullinsRuckbartonIndividual16.2528Did Not Advance16.2528

Judo

AthleteEventRound of 32Round of 16QuarterfinalSemifinalRepechage 1Repechage 2Final / Opposition ResultOpposition ResultOpposition ResultOpposition ResultOpposition ResultOpposition ResultOpposition ResultRankKieran Foley–71 kg Ahn Byeong-keun LDid not Advance Juan Vargas W Hidetoshi Nakanishi LDid not Advance=7

Sailing

Bill O'Hara – Finn 13th

Shooting

AthleteEventScoreRankRoy McGowanTrap16953Albert ThompsonSkeet184T41

Swimming

Women AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRankCarol-Ann Heavey100 m freestyle 1:01.34 33 colspan=2 Did not advance200 m freestyle 2:07.75 20 colspan=2 Did not advance400 m freestyle 4:36.07 22 colspan=2 Did not advanceJulie Parkes100 m butterfly 1:06.20 27 colspan=2 Did not advance200 m butterfly 2:20.85 21 colspan=2 Did not advance

References