The 2012–13 A.C. Siena season was the 107th season in existence and 9th season in the top flight of Italian football, Serie A.
Players
Squad
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.
Source: Serie A, Soccerway 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 number of points only once all matches between said clubs have been played)[3] (R) Relegated Notes: