Across the world, Rosanow (Розанов , Rosanow ) is an extremely rare unknown gender first name. Much more frequently, Rosanow is the last name as well as the forename.
Rjazanov, Rozanov, Ryazanov, Росанов, and Рязанов
Mischa
, Rosanow 
) is an extremely rare unknown gender first name. Much more frequently, Rosanow is the last name as well as the forename.