2012–13 AC Siena season

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.

Appearances and goals
! colspan="10" style="background:#dcdcdc; text-align:center"| Goalkeepers

! colspan="10" style="background:#dcdcdc; text-align:center"| Defenders

! colspan="10" style="background:#dcdcdc; text-align:center"| Midfielders

! colspan="10" style="background:#dcdcdc; text-align:center"| Forwards

! colspan="10" style="background:#dcdcdc; text-align:center"| Players transferred out during the season

Top scorers
This includes all competitive matches. The list is sorted by shirt number when total goals are equal. {| class="wikitable sortable" style="font-size: 95%; text-align: center;" !width=15|R !width=15|No. !width=15|Pos !width=15|Nat !width=150|Name !width=80|Serie A !width=80|Coppa Italia !width=80|Total
 * 1
 * 10
 * FW
 * Innocent Emeghara
 * 7
 * 0
 * 7
 * 2
 * 11
 * FW
 * 🇮🇹
 * Emanuele Calaiò
 * 4
 * 1
 * 5
 * 27
 * MF
 * 🇮🇹
 * Alessandro Rosina
 * 5
 * 0
 * 5
 * 4
 * 91
 * FW
 * 🇧🇷
 * Reginaldo
 * 3
 * 1
 * 4
 * 5
 * Own goals
 * 2
 * 1
 * 3
 * 6
 * 7
 * MF
 * 🇮🇹
 * Francesco Valiani
 * 2
 * 0
 * 2
 * 8
 * MF
 * 🇮🇹
 * Simone Vergassola
 * 2
 * 0
 * 2
 * 9
 * FW
 * 🇮🇹
 * Michele Paolucci
 * 2
 * 0
 * 2
 * 10
 * MF
 * 🇮🇹
 * Gaetano D'Agostino
 * 0
 * 2
 * 2
 * 24
 * DF
 * 🇮🇹
 * Massimo Paci
 * 2
 * 0
 * 2
 * 57
 * FW
 * 🇧🇷
 * Zé Eduardo
 * 1
 * 1
 * 2
 * 81
 * FW
 * 🇦🇱
 * Erjon Bogdani
 * 2
 * 0
 * 2
 * 13
 * 6
 * MF
 * 🇧🇷
 * Ângelo
 * 1
 * 0
 * 1
 * 13
 * DF
 * Luís Neto
 * 1
 * 0
 * 1
 * 16
 * MF
 * 🇮🇹
 * Valerio Verre
 * 0
 * 1
 * 1
 * 77
 * MF
 * 🇮🇹
 * Alessio Sestu
 * 1
 * 0
 * 1
 * 87
 * DF
 * 🇮🇹
 * Fabrizio Grillo
 * 1
 * 0
 * 1
 * DF
 * Luís Neto
 * 1
 * 0
 * 1
 * 16
 * MF
 * 🇮🇹
 * Valerio Verre
 * 0
 * 1
 * 1
 * 77
 * MF
 * 🇮🇹
 * Alessio Sestu
 * 1
 * 0
 * 1
 * 87
 * DF
 * 🇮🇹
 * Fabrizio Grillo
 * 1
 * 0
 * 1
 * 87
 * DF
 * 🇮🇹
 * Fabrizio Grillo
 * 1
 * 0
 * 1