Last name Исигоока (Ishigooka 
, Исигоока 
) , in the world, is a very rare family name. The surname Исигоока is characteristic of Ecuador, where it is a very rare surname, Brazil, where it is an extremely rare surname, and Russia. Not in comparison with a country's population, this name is the most popular in Brazil, Russia, and the United States. Much less frequently, Исигоока is the forename as well as the last name.