Kattumangattu Abraham Mar Koorilos I

Kattumanghattu Abraham Mar Koorilos I was the first primate and Metropolitan of the Malabar Independent Syrian Church in Kerala, India, although it was known initially as Thozhiyoor Church when established in 1772. Abraham Koorilos I is popularly known as Kattumangattu Valiya Bava.

Mar Koorilos I remained primate for 30 years from 1772 until his death on 10 July 1802. His brother succeeded him as primate of the church as Kattumangattu Geevarghese Mar Koorilose II until 1808.