The 42 Martyrs of Amorium (Greek: οἰ ἅγιοι μβ′ μάρτυρες τοῦ Ἀμορίου) were a group of Byzantine senior officials taken prisoner by the Abbasid Caliphate in the Sack of Amorium in 838 and executed in 845, after refusing to convert to Islam. They are commemorated by the Roman Catholic Church and the Eastern Orthodox Church on March 6.