|Full name||Niall John O'Brien|
|Born|| 8 November 1981|
|Height||5 ft 7 in (1.70 m)|
|Batting style||Left handed|
|Relations|| Brendan O'Brien (father)|
Kevin O'Brien (brother)
|Only Test (cap 6)||11 May 2018 v Pakistan|
|ODI debut (cap 13)||5 August 2006 v Scotland|
|Last ODI||23 March 2018 v Afghanistan|
|T20I debut (cap 7)||2 August 2008 v Scotland|
|Last T20I||13 March 2016 v Netherlands|
|Domestic team information|
|2012||Khulna Royal Bengals|
|2013–2016||Leicestershire (squad no. 10)|
|2017–present||North West Warriors|
|5 wickets in innings||-||–||–||0|
|10 wickets in match||-||n/a||n/a||0|
|Source: , 4 May 2018|
Niall John O'Brien (born 8 November 1981) is an Irish cricketer. He is a left-handed batsman and wicket-keeper. Domestically O'Brien began his professional career with Kent in 2004 before joining Northamptonshire at the start of 2007, spending 6 seasons there before joining Leicestershire for 2013.
He made his One Day International debut for Ireland in 2006; two years later he played his first Twenty20 International. He was one of the eleven cricketers to play in Ireland's first ever Test match, against Pakistan, in May 2018.
O'Brien has also played in overseas twenty20 leagues, first the Indian Cricket League in 2008 and then the Bangladesh Premier League on its formation in 2012. His brother, Kevin, plays alongside him in the Ireland team while his father, Brendan, played cricket for Ireland from 1966 to 1981.
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