All over the world, Yso (Исо 
, Yso 
) is a rare unisex first name. The forename Yso is habitual in Tajikistan, where it is quite a rare male name, Kyrgyzstan, where it is a rare boy's name, and Bulgaria. Not in comparison with a country's population, the name is most common in Tajikistan, Egypt, and Sudan. Also, Yso is the last name as well as the forename.