|Full name||Kevin Joseph O'Brien|
|Born||4 March 1984 (age 29)
|Bowling style||Right arm medium-fast|
|Role||All-rounder, Ireland vice-captain|
|Relations||Niall O'Brien (brother)|
|ODI debut (10th Cap)||13 June 2006 v England|
|Last ODI||5 July 2012 v Afghanistan|
|T20I debut (6th cap)||2 August 2008 v Scotland|
|Last T20I||24 September 2012 v West Indies|
|Domestic team information|
|Source: ESPNCRICINFO, 28 April 2013|
Kevin Joseph O'Brien (born 4 March 1984) is an Irish all-rounder who plays for Railway Union Cricket Club and Somerset County Cricket Club.,he also holds the record for the fastest century ever scored at a World Cup, coming from 50 balls against England on 2 March 2011. An all-rounder, O'Brien is an aggressive right-handed middle to lower order batsman and a right-arm medium-fast bowler. He made his One Day International debut in 2006 in Ireland's inaugural match. O'Brien played for Nottinghamshire in 2009, and in 2010 was awarded a contract with Cricket Ireland, making him one of the six players with a full-time contract with the board. He has been Ireland's vice-captain since January 2012.His brother,Neil O'Brien also plays for Ireland and is the wicket-keeper of the team.
O'Brien represented Ireland in the Under-19s World Cup of 2004 in which he made 241 runs to help Ireland reach the Plate Semi-Finals before being defeated by Australia U-19s. The following year he also played for the MCC Young Cricketers.On June 13 2006 he made his ODI debut in Ireland's inaugural ODI game against England in Belfast,North Ireland. Bowling first he took 1 for 47 off his 10 overs,however England still managed 301. His wicket came off his first delivery and was that of captain Andrew Strauss who was caught at square leg by Andre Botha. Batting at 6 down, O'Brien made 35 from 48 balls but Ireland still fell 38 runs short.