Yakin Caporetto wani babban soja ne a lokacin yakin duniya na daya wanda ya gudana daga ranar 24 ga Oktoba zuwa 19 ga Nuwamba, 1917, a yankin arewa maso gabashin Italiya kusa da garin Caporetto (yanzu Kobarid a Slovenia). An gwabza yakin ne tsakanin dakarun kasashen tsakiya musamman Jamus da Ostiriya-Hungary da kuma dakarun Italiya. Mahukuntan tsakiya sun kaddamar da harin ba-zata a kan sojojin Italiya, inda suka tsallaka layinsu tare da haifar da ja da baya. Yaƙin ya haifar da gagarumar nasara ga Ƙungiyoyin Tsakiyar Tsakiya kuma ya kai ga Italiya ta rasa wani yanki mai mahimmanci na yankinta.