This is a list of seasons played by Durham County Cricket Club in English cricket, from the club's first appearance in a major competition to the most recent completed season.
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.
Key to league record: Div - division played in (see opposite) P – games played W – games won L – games lost D – games drawn NR – games with no result Abnd – games abandoned Pts – points Pos – final position Key to rounds: RPre - preliminary round R1 – first round R2 – second round, etc.
QF – quarter-final SF – semi-final Grp – group stage RU - runners-up n/a – not applicable