|Full name||Kenji Arai|
|Date of birth||May 19, 1978|
|Place of birth||Saitama, Japan|
|Height||1.82 m (5 ft 11 1⁄2 in)|
|2004–2005||Albirex Niigata Singapore||51||(6)|
|2006–2009||Singapore Armed Forces||119||(15)|
|* Senior club appearances and goals counted for the domestic league only.
Arai entered professional football with Albirex Niigata after graduating from Rissho University in 2001 but was unable to hold on to the first team place although he played 20 league games for Albirex Niigata in his first season. He was on loan to Albirex Niigata FC (Singapore) in 2004 and in 2006 he secured a permanent move to Singapore Armed Forces FC.
He is also the second Japanese player, after his Singapore Armed Forces FC teammate Masahiro Fukasawa, to play in the AFC Champions League for a non-Japanese club. On November 2009, Kenji joined SC Goa. He returned to Singapore and joined Sengkang Punggol FC on 2010 and subsequently Home United FC in 2011.
|Club performance||League||Cup||League Cup||Total|
|Japan||League||Emperor's Cup||J.League Cup||Total|
|2001||Albirex Niigata||J2 League||20||0||2||0||2||0||24||0|
|Singapore||League||Singapore Cup||League Cup||Total|
|2004||Albirex Niigata Singapore||S. League||26||3||1||0||-||27||3|
|2006||Singapore Armed Forces||S. League||28||3||3||0||-||31||3|
- J2 League: 2003
Singapore Armed Forces
- "Stats Centre: Kenji Arai Facts". Guardian.co.uk. Archived from the original on 2012-06-01. Retrieved 2009-05-15.