Around the globe, Haiwa (海娃 
, Haiwa 
) is quite a rare gender-neutral first name. The forename Haiwa is characteristic of Tanzania, where it is a rare gender-neutral name, China, and Italy, where it is a very rare male name. Measured by absolute frequency, it is the most numerous in China, Tanzania, and Nigeria. Very seldom, Haiwa is the last name as well as the forename.