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All around the world, Seigo (Seigo
, セイゴ
, 塞戈
) is a rare largely masculine, but uncommonly female given name. The forename Seigo is characteristic of Japan, where it is a rare masculine name, the United States, where it is an extremely rare predominantly male, but very seldom feminine name, and China, where it is an extremely rare gender-neutral name. More frequently, Seigo is the last name as well as the forename.