Demirkapı means "Iron gate" in Turkish and it may refer to:
Demirkapı, Şavşat, a village in Şavşat district of Artvin Province Demirkapı, Mut, a village in Mut district of Mersin Province Demirkapı, Susurluk, a village Temir Kapig, a pass in Uzbekistan Demir Kapija, a town in the Republic of Macedonia
See also Iron Gates