Seiki may refer to:
*
Seiki (given name)
Seiki (written: , , , , , or ) is a masculine Japanese given name. Notable people with the name include:
*, Japanese football and manager
*Seiki Kayamori (1877–1941), Japanese photographer
*, pseudonym of Kuroda Kiyoteru, Japanese painter and t ...
, a Japanese given name
*
Seiki Digital, an American television manufacturing company
*
Japanese corvette ''Seiki'', a screw sloop in the Imperial Japanese Navy
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