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. Top run scorer/wicket taker shown in bold when he was the leading run scorer/wicket taker in the country.
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
^Owing to the 1999 Cricket World Cup, the Benson & Hedges Cup was replaced by the Benson & Hedges Super Cup, which featured the top eight teams from 1998's competition. Durham did not qualify.