Northamptonshire County Cricket Club in 2005 are playing their cricket in Division Two of the County Championship and Division One of the totesport League. They started the season at 12–1 to win the Division Two title. During the off season 9 players left. On 3 May the Steelbacks booked their place in the second round of the C&G Trophy, thrashing Denmark in Brøndby. They then lost by 10 wickets in the Championship to Yorkshire before drawing with Essex. In the fourth round of the Sunday League, they were thoroughly outplayed by Lancashire.