About Seiji Mataichi
Lived 1944 – 2023 (aged 79). Seiji Mataichi was a Japanese politician and member of parliament.
was a Japanese politician who served as a member of the House of Councillors. He was also the Chairman of the Social Democratic Party. Mataichi died on 18 September 2023, at the age of 79.
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Important facts
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Contemporaries
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Frequently asked questions
Who was Seiji Mataichi?
Japanese politician
When was Seiji Mataichi born?
Seiji Mataichi was born on 18 July 1944 in Toyama.
When did Seiji Mataichi die?
Seiji Mataichi died on 18 September 2023 in Toyama.
What was Seiji Mataichi's occupation?
Seiji Mataichi was a politician and member of parliament.
What nationality was Seiji Mataichi?
Seiji Mataichi was Japanese.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Seiji Mataichi. https://biography.guide/seiji-mataichi/
MLA: "Seiji Mataichi." Biography.guide, https://biography.guide/seiji-mataichi/.
Chicago: "Seiji Mataichi." Biography.guide. https://biography.guide/seiji-mataichi/.
Data last updated: 2026-09-23 · Spot an error? Report a correction.
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