Babban cocin Asti (cattedrale di Santa Maria Assunta e San Gottardo di Asti da harshen Italiya) ya kasance wani wurin zama bishop na Diocese na Asti, katolika ne na Roman Katolika a Asti, Piedmont, Italiya. An keɓe shi ne don Tsammani na Maryamu Mai Albarka da kuma ga Saint Gotthard, kuma a tsayin 82m da 24m a tsayi da faɗi, ɗayan manyan majami'u ne a Piedmont, mafi girman bayanin gine-ginen Gothic na yankin, kuma daga cikin mafi kyawu misalan Lombard Romanesque abin godiya a arewacin Italiya. Wataƙila ginin farko na babban cocin ya fara ne a cikin ƙarni na biyar (5) ko na shida, kuma hadisai sun nuna cewa ya maye gurbin jerin gine-ginen da suka gabata ciki har da tsohuwar cocin da aka gina a kan muryar waliyyin da ya yi shahada, Secundus na Asti . Daga cikin sauran waɗannan gine-ginen har yanzu suna bayyane shi ne Cocin St. John, wanda ake amfani da shi yau don baftisma. Wajen 1070, ginin ya ruguje, wani ɓangare sakamakon gobara da Adelaide ta Susa ta saka a rikicin ta da bishop-bishop.