Joey O'Brien (born February 17, 1986 in Dublin, Ireland) is an Irish international midfielder or defender who plays football for Bolton Wanderers of the FA Premier League.
To gain further experience, O'Brien was loaned out to League One team Sheffield Wednesday for the most part of the 2004-2005 season, making 15 appearances and scoring two goals, including one on his debut. O'Brien was named as captain for the last game of his loan spell in honour of his contribution.
O'Brien is in the current Bolton squad for 2006/2007.
Upon returning to Bolton, O'Brien made his Premiership debut in May 2005 against Everton F.C. when coming on as a late substitute in place of Fernando Hierro. He was given his first start in Bolton's colours in their away UEFA Cup 1st Round tie with Lokomotiv Plovdiv in September 2005.
He made his debut for his country on the 1st of March 2006.
He is currently nursing the effects of a long term knee injury which has kept him out of Bolton's plans throughout the 2006-2007 season but many anticipate that he will return in the early part of the 2007/2008 season. He made a return to action in Bolton's 1-1 draw with FK Rabotnicki in the UEFA Cup, coming on as a 76th minute substitute for Nicky Hunt and started the next game against Tottenham Hotspur, a game which also ended in a 1-1 scoreline.