Family name Tsugui (Tsugui 
, Цугуй 
) , across the world, is a rare surname. The cognomen Tsugui is characteristic of Ukraine, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Ukraine, Russia, and Kazakhstan. Much less frequently, Tsugui is the forename as well as the last name.