List of Northamptonshire County Cricket Club seasons

It details the club's achievements in major competitions, and the top run-scorers and wicket-takers for each season.

Division shown in bold when it changes due to promotion, relegation or league reorganisation.

QF – quarter-final SF – semi-final Grp – group stage RU - runners-up n/a – not applicable A.

It was replaced, along with the Friends Provident Trophy, by the group format Clydesdale Bank 40.

^ The Friends Provident Trophy competition did not start until the 1963 season, and for the 2010 was replaced by a group format named the Clydesdale Bank 40.