Seiko (given name)

Seiko is a Japanese given name, almost exclusively feminine. Its meaning depends on the kanji used to write it.

Kanji and meaning
The "ko" in Seiko is generally written with a kanji meaning "child", and in that case is exclusively feminine; the kanji for "Sei" varies, for example:
 * 晴子 ("clear weather"); also read Haruko
 * 正子 ("upright", "correct"); also read Masako or Shōko, and also used in Korean to write the name Jeong-ja
 * 清子 ("clean", "pure"); also read Kiyoko or Sayako
 * 聖子 ("holy"); also read Kiyoko or Shōko, and also used in Korean to write the name Seong-ja
 * 青子 ("blue" or "green"); also read Aoko

Rarely, the "ko" may be written with a kanji meaning "lake". Written this way, the name may be either masculine or feminine.

People
People with this name include:
 * Seiko Fujita (藤田 西湖), Japanese male martial artist
 * Seiko Hashimoto (橋本 聖子), Japanese politician, House of Councillors member, former ice speed skater and track cycling sprinter
 * Seiko Kanno (菅野 聖子), Japanese painter and poet
 * Seiko Kawamura (河村 聖子), Japanese volleyball player
 * Seiko Lee Japanese soprano
 * Seiko Matsuda (松田 聖子), Japanese singer
 * Seiko Mikami (三上 晴子), Japanese artist
 * Seiko Nakano (中野 聖子), Japanese voice actress
 * Seiko Niizuma (新妻 聖子), Japanese actress
 * Seiko Noda (野田 聖子), Japanese politician, House of Representatives member
 * Seiko Obonai (小保内 聖子), Japanese shot putter
 * Seiko Okamoto (岡本 聖子), Japanese tennis player
 * Okuhara Seiko (奥原 晴湖), Japanese female painter
 * Seiko Oomori (大森 靖子), Japanese singer-songwriter
 * Seiko Shimakage (島影 せい子), Japanese volleyball player who competed at the 1972 Summer Olympics
 * Seiko Tanabe (田辺 聖子), Japanese novelist
 * Seiko Yamada (山田 靑子), Japanese badminton player
 * Seiko Yamamoto (山本 聖子), Japanese wrestler
 * Seiko Yoshida (吉田 聖子), Japanese voice actress

Fictional characters with this name include:
 * Seiko Shinohara, in the survival horror video game Corpse Party
 * Seiko Kimura, a character from Danganronpa 3: The End of Hope's Peak High School