Coat of arms of the Holy See

The coat of arms of the Holy See combines two crossed keys and a tiara, used as the official emblem of the Holy See, and by extension, the wider Catholic Church. These forms have origins attested from the 14th century. The combination of one gold and one silver key is a somewhat later development.

The coat of arms of the Holy See as an emblem was filed in 1996 at the World Organization for Intellectual Property. This coat of arms without shield is displayed on the front cover of the Holy See passports.