Pierce O'Leary (born 28 February 2000) is an Irish

professional boxer Professional boxing, or prizefighting, is regulated, sanctioned boxing. Professional boxing bouts are fought for a purse that is divided between the boxers as determined by contract. Most professional fights are supervised by a regulatory auth ...

who has been the

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super-lightweight Light welterweight, also known as junior welterweight or super lightweight, is a weight class in combat sports. Boxing Professional boxing In professional boxing, light welterweight is contested between the lightweight and welterweight divisions, ...

champion since June 2025 and held the WBC International title in the same weight division since November 2022.

Career

A nine-time Irish amateur champion, O'Leary turned professional in 2019, signing a promotional contract with

MTK Global MTK Global (Mack The Knife Global) was a boxing and mixed martial arts management and event promotions company founded by Irish crime boss Daniel Kinahan and former professional boxer Matthew 'Mack the Knife' Macklin . Originally established in 2 ...

. He made his pro-debut on 11 October that year, defeating Oscar Amador on points over four rounds at

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. Unbeaten in his first 10 professional fights and now signed to Frank Warren's Queensbury Promotions, O'Leary claimed the vacant WBC International

title thanks to a unanimous decision win over Emmanuel Mungandjela at the

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in London on 26 November 2022. He made the first defense of his championship at the SSE Arena in Belfast on 27 May 2023, stopping Alin Florin Ciorceri in the first round. On 23 September 2023, he retained his title with a unanimous decision victory over Kane Gardner at

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in London. Two more successful defenses followed as O'Leary stopped Hovhannes Martirosyan in the ninth round at

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on 16 March 2024, and then prevailed via unanimous decision against Darragh Foley back at the SSE Arena in Belfast on 28 June 2024. In his next outing, he stopped Jose Edgardo Perdomo in the third of their scheduled eight-round non-title contest at Wembley Arena in London on 7 December 2024. O'Leary defended his championship for the fifth time against Liam Dillon at

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on 7 June 2025, with the vacant

super-lightweight title also on the line. He won via unanimous decision.

References

{{DEFAULTSORT:OLeary, Pierce Living people 2000 births Irish male boxers Light-welterweight boxers 21st-century Irish sportsmen Place of birth missing (living people) European Boxing Union champions