Seiki (given name)

• Seiki Ichihara, Japanese football and manager
• Seiki Kayamori, Japanese photographer
• Kuroda Seiki, pseudonym of Kuroda Kiyoteru, Japanese painter and teacher
• Seiki Nose, Japanese judoka
• Seiki Okuda, Japanese golfer
• Seiki Segawa, Japanese boxer
• Seiki Shimizu, Japanese writer
• Seiki Yoshioka, Japanese professional wrestler