Ireland competed at the 2000 Summer Olympics in Sydney, Australia.

Men's 100m Men's 200m Men's 400m Men's 800m Men's 1,500m Men's 5,000m Men's 110m Hurdles Men's 400m Hurdles Men's 4 × 100 m Men's 4 × 400 m Men's High Jump Men's Discus Men's Javelin Throw Men's Hammer Throw Men's 20 km Walk Men's 50 km Walk Women's 100m Women's 200m Women's 400m Women's 1,500m Women's 5,000m Women's 10,000m Women's 400m Hurdles Women's 4 × 400 m Women's 20 km Walk Women's Singles Men's 71 kg Men's Kayak Singles 500m Men's Kayak Singles 1000m Men's Kayak Singles Women's Kayak Singles Men's Cross Country Mountain Bike Women's Cross Country Mountain Bike Men's Road Race Women's Road Race Men's Lightweight Fours Men's Single Handed Dinghy (Finn) Men's Two Handed Keelboat (Star) Women's Single Handed Dinghy (Europe) Men's 200m Butterfly Men's 100m Breaststroke Men's 200m Breaststroke Women's 50m Freestyle Women's 100m Freestyle Women's 200m Freestyle Women's 400m Freestyle Women's 100m Breaststroke