Michael Petros III Kasbarian (in Armenian Միքայէլ Պետրոս Գ. Գասպարեան ) was a member of the Order of St. Antoine, from Aleppo, Syria.

All the big events took place at the Monastery of the Holy Savior, Kreim, Ghosta, Lebanon.

He began construction on the monk's church at Bzommar in 1761 completing it in 1771.

He worked diligently on expanding the convent at Bzommar, becoming the largest construction area on the mountain.

Michael Petros III found the need for missionaries to carry the message to neighboring countries.