The 2012-13 season was Cardiff's 86th in the Football League after joining in 1920. Cardiff were in their ninth consecutive season in the second tier following a third consecutive failure in the play-offs. Cardiff went under a "re-branding" during the close season meaning the home colours would be changed to red from the traditional blue, ending 104 years of the tradition. Cardiff were promoted to the Premier League during the season.

This is a list of the significant events to occur at the club during the 2012-13 season, presented in chronological order. This list does not include completed transfers, which are listed in the transfers section below, or match results, which are in the results section.

Updated to games played on 4 May 2013.
Source: BBC Sport
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored
(C) = Champion; (R) = Relegated; (P) = Promoted; (E) = Eliminated; (O) = Play-off winner; (A) = Advances to a further round.
Only applicable when the season is not finished:
(Q) = Qualified to the phase of tournament indicated; (TQ) = Qualified to tournament, but not yet to the particular phase indicated; (RQ) = Qualified to the relegation tournament indicated; (DQ) = Disqualified from tournament.

Last updated: 4 May 2013.
Source: Cardiff City FC

Last updated: 4 May 2013.
Source: Cardiff City FC
Ground: A = Away; H = Home. Result: D = Draw; L = Loss; W = Win; P = Postponed.

Supplier: Puma
Sponsor(s): Malaysia

Last updated: 11 September 2012.
Source: Historical Football Kit - NPower Championship 2012-13

Last updated: 4 May 2013
Source: Competitive match reports.
Competitive matches only
Matches started as captain only
Country: FIFA nationality; No.: Squad number; P: Position; Name: Player name; No. Games: Number of games started as captain.

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