Mattai may refer to:
- Mar Mattai Monastery, the traditional see of the Orthodox maphrian in Bartella
- Nittai of Arbela or Mattai of Arbela, av beit din of the Sanhedrin under the nasi Joshua ben Perachyah at the time of John Hyrcanus (reigned 134–104 BCE)
disambiguation page lists articles associated with the title Mattai.
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