Ahmed the Calligrapher

Ahmet the Calligrapher (; died 3 May 1682) was an Ottoman Turkish official venerated as a Christian saint. According to Christian sources, he converted to Christianity and was martyred on 3 May 1682; thus, he is commemorated as a martyr on this day. The only mentions of him are in Christian hagiographies.

Life Ahmet lived in Constantinople during the 1600s and was an official in the Ottoman Turkish government before his conversion.

Ahmet owned two Russian slaves, a concubine and an old woman, whom he allowed to attend one of the Greek Orthodox churches in Constantinople. In time Ahmet began to notice that when his pious Russian slaves returned from church they were far more gracious and loving than they were before going. Intrigued by this, Ahmet obtained permission to attend the Ecumenical Patriarch's celebration of the Divine Liturgy in Constantinople. Due to his status and identity, his request was not refused, and he was given a discreet place at the Church.

For this he was put before the Sultan, Mehmed IV, and qadi. After torture and a few chances to return to Islam he was subsequently beheaded on 3 May 1682.