Yaƙin Bull Run yana nufin yaƙe-yaƙe guda biyu na yakin basasar Amurka waɗanda aka yi kusa da Bull Run Creek a Virginia. An yi yakin farko ne a ranar 21 ga Yuli, 1861, na biyu kuma a ranar 28-30 ga Agusta, 1862. An sanya wa wadannan fadace-fadacen sunan Bull Run Creek, wanda wani karamin rafi ne da ya ratsa yankin da aka yi fadan. An gwabza fada tsakanin sojojin hadin gwiwa da aka fi sani da Sojojin Arewa, da kuma rundunar hadin gwiwa da aka fi sani da Sojojin Kudu.