Family name Ооя (Oya 
, 大野 
, 大屋 ) , all over the world, is a common cognomen. The family name Ооя is habitual in the Democratic Republic of the Congo, where it is quite a common surname, Ivory Coast, where it is quite a rare surname, and Turkey, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in the Democratic Republic of the Congo, Indonesia, and Turkey. More prevalently, Ооя is the forename as well as the last name.