Cognomen Мышь (Muso 
, Мышь 
) , all around the world, is quite a rare surname. The surname Мышь is habitual in Lesotho, where it is quite a common surname, North Macedonia, where it is quite a rare surname, and Albania. Not in comparison with a country's population, the name is most common in Lesotho, Indonesia, and Thailand. Likewise, Мышь is the forename as well as the last name.