Mattai may refer to:
Mar Mattai Monastery, the traditional see of the Orthodox maphrian in Bartella Mar Matti or Matthew the Hermit 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) Suchitra Mattai (born 1973), Guyanese-born American contemporary artist
See also Matai (disambiguation)