Administration of the Property of the Holy See (Italian: Amministrazione dei Beni della Santa Sede, abbreviated ABSS) was a commission that, until 1967, administered the property of the Holy See other than the money in cash and Italian government bonds received when the Financial Convention attached to the Lateran Treaty of 1929 was implemented.
Administrasi Harta Milik Tahta Suci (Bahasa Latin: Amministrazione dei Beni della Santa Sede, disingkat ABSS) adalah sebuah komisi yang, hingga tahun 1967, mengurus masalah harta properti milik Tahta Suci selain uang tunai dan obligasi pemerintah Italia yang diterima saat pelaksanaan persetujuan finansial yang berkaitan dengan Perjanjian Lateran tahun 1929.