Babban cocin Alessandria (da harshen Italiya) ya kasan ce Roman Katolika kuma babban coci ne a Alessandria, Piedmont, Italy, sadaukar da Saints Bitrus da Mark . Wuri ne na Bishop na Alessandria . Ya kasanvce kuma Wani diocese da ke kan Alessandria an ƙirƙira shi a cikin 1175 ta Paparoma Alexander III, kuma an gina babban cocin da aka keɓe wa Saint Peter a matsayin kujerar bishop a wancan lokacin. Ya yi kadan sosai duk da haka, saboda haka an rushe shi kuma an sake gina shi tsakanin 1288 da 1297. An rushe wannan babban cocin ne saboda dalilai na dabarun soja kan umarnin Napoleon Bonaparte a cikin 1803. Bishop din da aka kwace da babin ya sami izinin janar din Faransa na sojojin da ke mamaye don daukaka cocin St Mark zuwa matsayin babban coci. An gina wannan cocin a ƙarni na 13 don amfanin Dominicans . Sojojin Faransa sun ba da umarnin a cikin 1797 don kwata-kwata. Duk da haka an sake gina cocin: wannan ya faru ne daga 1807 zuwa 1810, kuma sabon cocin Neo-na gargajiya, mai suna bayan Saint Peter da Saint Mark, sun buɗe a watan Disamba 1810.