Ireland competed at the 1976 Summer Olympics in Montreal, Quebec, Canada. 44 competitors, 41 men and 3 women, took part in 34 events in 10 sports.^[2]

In Ireland's first appearance in archery competition at the Olympics, the nation was represented by one man, James Conroy.

Men's Individual Competition:

• James Conroy – 2255 points (→ 29th place)

Men's 800 metres

• Niall O'Shaughnessy

• Heat – 1:49.29 (→ did not advance)

Men's 1.500 metres

• Eamon Coghlan

• Heat – 3:39.87
• Semifinal – 3:38.60
• Final – 3:39.51 (→ 4th place)

• Niall O'Shaughnessy

• Heat – 3:40.12 (→ did not advance)

Men's 5.000 metres

• Edward Leddy

• Heat – 13:40.54 (→ national record, did not advance)

Men's 10.000 metres

• Edward Leddy

• Heat – 28:55.29 (→ did not advance)

Men's Marathon

• James McNamara – 2:24:57 (→ 39th place)
• Danny McDaid – 2:27:07 (→ 42nd place)
• Neil Cusack – 2:35:47 (→ 55th place)

Women's 1.500 metres

• Mary Purcell

• Heat – 4:08.63 (→ national record, did not advance)

Men's Light Flyweight (– 48 kg)

• Brendan Dunne
  1. First Round – Defeated Noboru Uchizama (JPN), RSC-2
  2. Second Round – Lost to Orlando Maldonado (PUR), KO-1

Two cyclists represented Ireland in 1976.

Individual road race

• Alan McCormack – did not finish (→ no ranking)
• Oliver McQuaid – did not finish (→ no ranking)

Men's single sculls

• Seán Drea 4th place in the Final (→ 4th)

Men's coxless fours

• Martin Feeley 2nd in repechage (→ unplaced)
• Iain Kennedy 2nd in repechage (→ unplaced)
• Andy McDonough 2nd in repechage (→ unplaced)
• Jaye Renehan 2nd in repechage (→ unplaced)

Men's coxed fours

• Jim Muldoon 1st in B Final (→ 7th)
• Christy O'Brien 1st in B Final (→ 7th)
• Willie Ryan 1st in B Final (→ 7th)
• Mick Ryan 1st in B Final (→ 7th)
• Liam Redmond 1st in B Final (→ 7th)