Cognomen 三野 (Mitsuno 
, 三野 ) , all around the world, is a rare surname. The surname 三野 is habitual in Czechia, where it is a rare surname, Hungary, where it is a very rare surname, and Japan. Not in comparison with a country's population, it is the most numerous in Japan, China, and the United States. Predominantly, 三野 is the forename as well as the last name.