Cognomen 岩科 (岩科 
, Iwashina 
) , all over the world, is a very rare last name. The last name 岩科 is characteristic of Israel, where it is a very rare surname, Canada, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in China, the United States, and Israel. More prevalently, 岩科 is the forename as well as the last name.