Cognomen Оида (生田 
, Oida 
, Оида 
) , in all the world, is quite a rare surname. The cognomen Оида is habitual in Philippines, where it is a rare surname, Austria, and Morocco, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Philippines, China, and the United States. Also, Оида is the forename as well as the last name.