The 2012–13 season saw Società Sportiva Calcio Napoli compete in Serie A, UEFA Europa League and Coppa Italia. In December 2012, Napoli were docked two points for two of their players not reporting plans to fix matches in 2010. About a month later, however, Napoli won their appeal against the ban and the punishments were overturned.

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Source: Lega Serie A
Rules for classification: 1st points; 2nd head-to-head points; 3rd head-to-head goal difference; 4th goal difference; 5th number of goals scored; 6th public draw.
(Head-to-head record is applied for clubs with the same amount of points only once all matches between said clubs have been played)
¹Lazio qualified to 2013–14 UEFA Europa League group stage after winning 2012–13 Coppa Italia.
²Sampdoria and Torino were docked 1 point due to involvement in the 2011–12 Italian football scandal.
³Atalanta was docked 2 points due to involvement in the 2011–12 Italian football scandal.
⁴Siena was docked 6 points due to involvement in the 2011–12 Italian football scandal.
(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.

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