Globally, Хироо (Hiroo 
, Masurao , Хироо 
) is a rare mostly masculine, but uncommonly female given name. The first name Хироо is characteristic of Japan, where it is a very rare male name, India, where it is a very rare unisex name, and the United States, where it is an extremely rare largely masculine, but uncommonly feminine name. Not in comparison with a country's population, it is the most numerous in India, Japan, and China. Also, Хироо is the last name as well as the forename.