Family name Muhai (木海 
, Muhai 
, Мухай 
) , all over the world, is quite a rare surname. The surname Muhai is habitual in Mozambique, where it is quite a rare surname, Ukraine, where it is a rare surname, and Kazakhstan. Measured by absolute frequency, the name is most common in Mozambique, China, and Russia. Likewise, Muhai is the forename as well as the last name.