Cognomen Баглаи (Baglay 
, Baglai 
, Баглаи 
) , all over the world, is a rare last name. The surname Баглаи is characteristic of Estonia, where it is a rare surname, Belarus, and Russia, where it is a very rare surname. Measured by absolute frequency, the name is most common in Russia, the United States, and Argentina. Very seldom, Баглаи is the forename as well as the last name.