List of Dundalk F.C. seasons

Dundalk Football Club is a professional association football club in Dundalk, Ireland. Dundalk compete in the League of Ireland Premier Division—the top tier of football in the Republic of Ireland—and are the highest-ranked Irish side in European football as measured by UEFA club coefficients. They are the second most successful club in the League's history (with 14 league titles and 12 FAI Cups).

The table details the team's achievements in senior first-team competitions. As of the end of the 2023 season, the team has spent 101 seasons in senior football – four seasons in the Leinster Senior League, 88 seasons in the League of Ireland/Premier Division, and nine seasons in the League of Ireland First Division (the second tier).

League seasons
Sources
 * a. Includes the Dublin City Cup, Top Four Cup, Leinster Senior Cup, Dublin and Belfast Intercity Cup, Setanta Sports Cup, Champions Cup (All-Ireland), President of Ireland's Cup, and LFA President's Cup.

Key

 * P = Played
 * W = Games won
 * D = Games drawn
 * L = Games lost
 * F = Goals for
 * A = Goals against
 * Pts = Points
 * Pos = Final position


 * Prem = League of Ireland Premier Division
 * First = League of Ireland First Division
 * LOI = League of Ireland pre 1985–86
 * LSL = Leinster Senior League
 * DNQ = Did not qualify
 * PR = Preliminary Round
 * 1Q = 1st Qualifying Round
 * 2Q = 2nd Qualifying Round


 * 3Q = 3rd Qualifying Round
 * PO = Play-off Round
 * Grp = Group Stage
 * R1 = Round 1
 * R2 = Round 2
 * R3 = Round 3
 * R4 = Round 4
 * R5 = Round 5


 * L16 = Round of 16
 * QF = Quarter-finals
 * SF = Semi-finals
 * R/U = Runners Up
 * W = Winners