Cognomen Gadai (Gadai 
, Гадай 
) , all over the world, is quite a rare family name. The family name Gadai is habitual in Fiji, where it is quite a rare surname, India, where it is a rare surname, and Ukraine. In absolute terms, it is the most numerous in India, Indonesia, and Ukraine. Likewise, Gadai is the forename as well as the last name.