Surname Roudia (Roudia 
, Рудя 
) , globally, is a rare family name. The last name Roudia is habitual in Ukraine, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Ukraine, India, and Russia. Much less frequently, Roudia is the forename as well as the last name.