Theophilus I of Jerusalem was the patriarch of the Church of Jerusalem from 1012 to 1020.^[1]

Theophilus was Bishop of Hibal before his appointment as Patriarch of Jerusalem by Mufarrij ibn Daghfal ibn al-Jarrah, the autonomous ruler of Palestine. The appointment occurred under the rule of Fatimid Caliph al-Hakim. Mufarrij suggested that the Christian community should re-build the Church of the Holy Sepulchre. However, shortly after making the suggestion, al-Hakim, who, earlier, had ordered the previous church destroyed,^[2] declared war on Mufarrij, and sent his troops to Syria and Palestine. Mufarrij soon died and his son and Patriarch Theophilus fled into hiding. In 1013, after a new amicable governor was seated, Patriarch Theophilus returned and stayed in Jerusalem until his repose in 1020.