Last name Маттай (Mattai 
, Маттай 
) , worldwide, is a rare surname. The last name Маттай is habitual in Sierra Leone, where it is quite a rare surname, Jamaica, where it is a rare surname, and Guyana. Measured by absolute frequency, it is commonest in India, Sierra Leone, and the United States. Much less frequently, Маттай is the forename as well as the last name.