Buuxi weedha soo socota: 11-kii Agoosto 2012, Buffon wuxuu kor u qaaday koobkiisii ugu horreeyay isagoo ah kabtanka cusub ee Juventus, ka dib markii uu ka tagay Alessandro Del Piero markii Juventus ay ka adkaatay Napoli 4-2 waqtigii dheeriga ahaa ee
2012 Supercoppa Italiana oo ka dhacday Beijing. Buffon waxaa soo gaaray dhaawac fudud waxaana ka maqnaa kulanka ugu horeeya ee Serie A xilli ciyaareedkii 2012-13 ee ay la ciyaareen Parma 25 August 2012. Wuxuu ku soo laabtay safka bilowga ee kulanka xiga ee Udinese ee Udine 2 Sebtember, isagoo xiran shaashadda kabtanka; Juventus ayaa ku guuleysatay ciyaarta 4<unk>1. Bishii Sebtember 20, kulankii ugu horreeyay ee Champions League ee Juventus ee xilli ciyaareedka ka dhanka ah kooxda heysata horyaalka Chelsea, Buffon wuxuu sameeyay kulankiisii 400-aad ee Juventus; ciyaarta ayaa ku dhammaatay barbaro 2 × 2 ah. Buffon wuxuu helay goolkiisii ugu horreeyay ee nadiif ah xilli ciyaareedkan guushii 2-0 ee ay ka gaareen Chievo 22kii Sebtember.