Teams Kevin O'Brien played for

TestIreland (2018-2019)
ODIIreland (2006-2021)
International Twenty20Ireland (2008-2021/22)
Main FCNottinghamshire (2009)
 Surrey (2014)
 Leinster Lightning (2017-2019)
Main ListANottinghamshire (2009)
 Gloucestershire (2011)
 Leicestershire (2016)
 Leinster Lightning (2017-2021)
 Munster Reds (2022)
Main Twenty20Nottinghamshire (2009)
 Gloucestershire (2011)
 Somerset (2012)
 Rangpur Riders (2012/13)
 Surrey (2013-2014)
 Trinidad and Tobago Red Steel (2013-2014)
 Northern Districts (2014/15-2015/16)
 Leicestershire (2015-2016)
 Leinster Lightning (2017-2021)
 Kandahar Kings (2018/19)
 Munster Reds (2022)
Other FCIreland (2006/07-2019)
Other ListAIreland A (2006)
 Ireland (2006-2021)
Other Twenty20Ireland (2008-2021/22)
 Ireland Wolves (2018)
Under-19 ODIIreland Under-19s (2003/04)
Second Eleven ChampionshipDurham Second XI (2004)
 Marylebone Cricket Club Young Cricketers (2005)
 Middlesex Second XI (2008)
 Nottinghamshire Second XI (2009)
 Gloucestershire Second XI (2011)
Second Eleven TrophyMarylebone Cricket Club Young Cricketers (2004-2005)
 Nottinghamshire Second XI (2009)
 Gloucestershire Second XI (2011)
 Surrey Second XI (2014)
Second Eleven Twenty20Gloucestershire Second XI (2011)
 Somerset Second XI (2012)
 Leicestershire Second XI (2015-2016)
Nottinghamshire Premier LeaguePlumtree (2009)
Ireland Inter-Provincial ChampionshipLeinster Lightning (2013-2016)
Ireland Inter-Provincial CupLeinster Lightning (2013-2016)
Ireland Inter-Provincial TrophyLeinster Lightning (2013-2016)
Irish Senior CupRailway Union (2003-2013)
Irish National CupRailway Union (2019)
Leinster LeagueRailway Union (2009-2017)
Leinster CupsRailway Union (2001-2017)
Leinster Twenty20Railway Union (2006-2017)
World CupIreland (2006/07-2014/15)
Twenty20 World CupIreland (2009-2021/22)
Under-19 World CupIreland Under-19s (2003/04)
World Cup Super LeagueIreland (2020-2021)
Bangladesh Premier LeagueRangpur Riders (2012/13)
Caribbean Premier LeagueTrinidad and Tobago Red Steel (2013-2014)
Twenty20 BlastNottinghamshire (2009)
 Gloucestershire (2011)
 Somerset (2012)
 Surrey (2013-2014)
 Leicestershire (2015-2016)
Super SmashNorthern Districts (2014/15-2015/16)
County ChampionshipSurrey (2014)
MiscellaneousRailway Union (2001-2010)
 Leinster Schools (2001)
 Ireland Under-17s (2001)
 Ireland Under-19s (2002-2003/04)
 Southern Ireland XI (2003-2004)
 Marylebone Cricket Club Young Cricketers (2003-2005)
 Ireland Under-23s (2004-2007)
 Marylebone Cricket Club (2004)
 Ireland (2006-2021/22)
 Ireland A (2006-2020)
 ICC Winter Training Camp XI (2006/07)
 Europe (2007)
 PCA Masters XI (2009)
 Gloucestershire Second XI (2011)
 Rest of the World XI (2011/12)
 South (2012)
 Ireland Wolves (2017)
 Edmonton Royals (2018)
 Kathmandu Kings XI (2018/19)
 Leinster Lightning (2019)
 World Giants (2021/22-2022/23)
 Play Master Warriors (2022/23)
 Gujarat Giants (2023/24)