Kevin O'Byrne (born 16 April 1991) is an Irish rugby union player for English club Ealing Trailfinders in the RFU Championship.

He captained the Munster under-18s club side during the 2008–09 inter-provincials and was part of Highfield under-18s All-Ireland winning squad in 2009.

[4] O'Byrne made his European Rugby Champions Cup debut for Munster on 21 October 2017, doing so when he came on as a replacement for Rhys Marshall in the round 2 fixture against Racing 92.

[8] He earned the Man-of-the-Match award in Munster's 30–26 away win against South African side Cheetahs during the 2018–19 Pro14 on 4 November 2018.

[10] He signed a two-year contract extension with Munster in March 2020, a deal that will see O'Byrne remain with the province until at least June 2022.