Athletics
Men's 1,500 metres
- Ray Flynn
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- Heat — 3:42.0 (→ did not advance)
Men's 5,000 metres
- Eamonn Coghlan
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- Heat — 13:45.4
- Semi Final — 13:28.8
- Final — 13:22.8 (→ 4th place)
- John Treacy
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- Heat — 13:44.8
- Semi Final — 13:40.3
- Final — 13:23.7 (→ 7th place)
- Mick O'Shea
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- Heat — 14:03.0 (→ did not advance)
Men's 10,000 metres
- John Treacy
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- Heat — did not finish (→ did not advance)
Men's Marathon
- Dick Hooper
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- Final — 2:23:53 (→ 38th place)
- Pat Hooper
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- Final — 2:30:28 (→ 42nd place)
- John Treacy
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- Final — did not start (→ no ranking)
Men's Hammer Throw
- Seán Egan
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- Qualification — 63.94 m (→ did not advance, 16th place)
Read more about this topic: Ireland At The 1980 Summer Olympics