Donnacha O'Brien (born 22 July 1998) is an Irish racehorse trainer and former

jockey A jockey is someone who rides horses in horse racing or steeplechase (horse racing), steeplechase racing, primarily as a profession. The word also applies to camel riders in camel racing. The word "jockey" originated from England and was used ...

who competed in

Flat racing Horse racing is an equestrianism, equestrian performance activity, typically involving two or more horses ridden by jockeys (or sometimes driven without riders) over a set distance for competition. It is one of the most ancient of all spor ...

. O'Brien is the son of multiple champion trainer

Aidan O'Brien Aidan Patrick O'Brien (born 16 October 1969 in County Wexford, Ireland) Aidan O'Brien bio NTRA. ...

and brother of jockey and trainer Joseph O'Brien. Donnacha O'Brien rode his first winner on Quartz, trained by his father, at Dundalk Stadium in September 2014, and gained his first

Group 1 Group 1 may refer to: * Alkali metal, a chemical element classification for Alkali metal * Group 1 (motorsport), a regulation set of the FIA for series-production touring cars used in motorsport. * Group One Thoroughbred horse races, the leading e ...

victory when he rode Intricately to win the 2016 Moyglare Stud Stakes. Intricately was bred by his mother, Anne Marie, and trained by his brother. O'Brien was Irish flat racing champion apprentice jockey in 2016 and Irish flat racing Champion Jockey for the first time in 2018. He retained his title in 2019, beating Colin Keane in a season which saw two jockeys ride over 100 winners in a season in Ireland for the first time. O'Brien announced his retirement from race riding on 25 November 2019 and announced his intention to take up training.

Major wins as a jockey

Ireland *

Irish Derby The Irish Derby ( Irish: Dearbaí na hÉireann) is a Group 1 flat horse race in Ireland open to three-year-old thoroughbred colts and fillies. It is run at the Curragh over a dista ...

- (1) - ''Latrobe (2018)'' * Moyglare Stud Stakes - (2) - ''Intricately (2016), Happily (2017)'' ---- Great Britain *

2000 Guineas The 2000 Guineas Stakes is a Group 1 flat race in Great Britain open to three-year-old thoroughbred colts and fillies. It is run on the Rowley Mile at Newmarket over a distance of 1 mile (1.6 km) and scheduled to take place each yea ...

- (2) - '' Saxon Warrior (2018),

Magna Grecia Magna Graecia refers to the Greek-speaking areas of southern Italy, encompassing the modern Italian regions of Calabria, Apulia, Basilicata, Campania, and Sicily. These regions were extensively settled by Greeks beginning in the 8th century ...

(2019)'' * Cheveley Park Stakes - ''

Fairyland Fairyland (Early Modern English: ''Faerie''; ( Scottish mythology; cf. (Norse mythology)) in English and Scottish folklore is the fabulous land or abode of fairies or ''fays''. Old French Old French (, , ; ) was the language spoken in most of ...

(2018)'' *

Epsom Oaks The Oaks Stakes is a Group 1 flat horse race in Great Britain open to three-year-old fillies. It is run at Epsom Downs over a distance of 1 mile, 4 furlongs and 6 ya ...

- '' Forever Together (2018)'' * Middle Park Stakes - '' Ten Sovereigns (2018)'' * Vertem Futurity Trophy - ''Magna Grecia (2018)''

Major wins as a trainer

Ireland * Moyglare Stud Stakes - (1) - ''Shale (2020)'' * Matron Stakes - (1) - ''Porta Fortuna (2024)'' ---- Great Britain * Cheveley Park Stakes - (1) - '' Porta Fortuna (2023) '' * Coronation Stakes - (1) - '' Porta Fortuna (2024) '' * Falmouth Stakes - (1) '' Porta Fortuna (2024) '' *

Nassau Stakes The Nassau Stakes is a Group races, Group 1 Flat racing, flat Horse racing, horse race in Great Britain open to Filly, fillies and mares aged three years or older. It is run at ...

– (1) - '' Fancy Blue (2020) '' ---- France * Critérium International - (1) - '' Proud and Regal (2022) '' * Prix de Diane – (1) - ''Fancy Blue (2020)''

References

Living people 1988 births Irish jockeys Irish racehorse trainers Equestrians from County Wexford {{Ireland-horseracing-bio-stub