Kōtarō Koizumi

Kotaro Koizumi has navigated an unusually heavy inheritance with real grace. As the eldest son of former Prime Minister Junichiro Koizumi and brother of politician Shinjiro, the obvious path was politics, yet he chose acting instead, even dropping out of Nihon University to pursue it. I respect that quiet defiance of expectation. Rather than coast on a famous surname, he built a genuine career on warmth and steady, dependable performances. What I find admirable is the discipline of carving out an independent identity while carrying a name that follows you into every room you enter.

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Name (English)

Kōtarō Koizumi

Name (Japanese)

小泉孝太郎

Reading

こいずみ こうたろう

Born

July 10, 1978 (age 48)

Origin

Yokosuka, Kanagawa Prefecture, Japan

Height

177 cm

Occupation

actor / tarento / film actor

Zodiac / Chinese zodiac

Cancer / Horse

Blood type

AB

Agency

Izawa Office

Active years

2001 -

University

Nihon University

Works summary

Appearances

250 (2001–2026)

By year (titles with a known year)

2001: 1, 2002: 6, 2003: 6, 2004: 4, 2005: 8, 2006: 6, 2007: 9, 2008: 8, 2009: 10, 2010: 6, 2011: 5, 2012: 9, 2013: 13, 2014: 11, 2015: 6, 2016: 15, 2017: 8, 2018: 8, 2019: 6, 2020: 7, 2021: 9, 2022: 9, 2023: 20, 2024: 21, 2025: 15, 2026: 3, year unknown: 21

Debut work

ダイエット生

Filmography / notable works

• Wikipedia (English)https://en.wikipedia.org/wiki/Kotaro%20Koizumi
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E5%B0%8F%E6%B3%89%E5%AD%9D%E5%A4%AA%E9%83%8E
• Wikidatahttps://www.wikidata.org/wiki/Q1036065

Tags

• Kanagawa Prefecture
• actor
• tarento
• film actor

Last updated

September 24, 2026

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. Works and profile fields sourced from Wikipedia reflect content as of 2026-08-26. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.