Family name Ройх (Roih 
, Rojh 
, Ройх 
) , worldwide, is a very rare cognomen. The surname Ройх is habitual in Denmark, where it is a rare surname, Russia, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in India, Russia, and Denmark. Likewise, Ройх is the forename as well as the last name.