Family name Ryoma (Ryoma 
, ريوما 
, Рёма 
) , all around the world, is a rare surname. The surname Ryoma is habitual in Finland, where it is quite a rare surname, Indonesia, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, this name is the most popular in Finland, Indonesia, and China. More prevalently, Ryoma is the forename as well as the last name.