Surname Sái (Saya 
, Sái 
) , all around the world, is a common family name. The family name Sái is characteristic of the Democratic Republic of the Congo, where it is quite a common surname, Gabon, where it is quite a rare surname, and Uruguay. Not in comparison with a country's population, it is the most numerous in the Democratic Republic of the Congo, India, and Indonesia. Also, Sái is the forename as well as the last name.