
Donnacha O’Brien
Donnacha O’Brien is a prominent Irish horse racing trainer and former jockey known for his successful career in the sport. He is the son of legendary trainer Aidan O’Brien and gained recognition as a talented jockey before transitioning to training. He notably won the Irish Derby as a trainer with Latrobe in 2018, showcasing his skills in both roles.
Country presence
Recent news mentions
Donnacha O’Brien was involved in saddling the winners of the two other Group One prizes.
Scandinavia highlights Aidan O’Brien Group One double with Irish Leger victory – The Irish TimesDonnacha O’Brien labelled Foley’s riding as 'brutal' on Sunday following the previous day’s €1.25 million Leopardstown feature.
Shane Foley’s Champion Stakes ride slammed as ‘brutal riding’ by Donnacha O’Brien – The Irish TimesDonnacha O'Brien saddled a first Breeders’ Cup winner with Balantina in the Juvenile Fillies event.
Willie Mullins supplies Breeders’ Cup shock as Ethical Diamond secures a first win and $5m prize – The Irish TimesJoseph O’Brien combined with his brother Donnacha to land the race as a trainer through Latrobe in 2018.
Ryan Moore has historic Irish Derby hat-trick in his sights aboard Epsom hero Lambourn – The Irish Times
















