Atsushi Oshima
大島 敦
Official portrait, 2009
Acting Leader of the Kibō no Tō
In office 14 November 2017 – 7 May 2018
Leader	Yuichiro Tamaki
Preceded by	Position established
Succeeded by	Position abolished
Secretary-General of the Democratic Party
In office September 2017 – October 2017
Preceded by	Yoshihiko Noda
Succeeded by	Teruhiko Mashiko
Member of the House of Representatives from Northern Kanto
Incumbent
Assumed office 25 June 2000
Preceded by	Kaneshige Wakamatsu
Constituency	Saitama 6th (2000–2012) PR block (2012–2014) Saitama 6th (2014–2026) PR block (2026–present)
Personal details
Born	(1956-12-21) 21 December 1956 (age 69) Kitamoto, Saitama, Japan
Party	CRA (since 2026)
Other political affiliations	DPJ (2000–2016) DP (2016–2017) KnT (2017–2018) DPP (2018–2020) CDP (2020–2026)
Alma mater	Waseda University
Signature
Website	https://oshimaatsushi.com/

Atsushi Oshima (大島 敦, Ōshima Atsushi; born 1956) is a Japanese politician of the Democratic Party for the People, a member of the House of Representatives in the Diet (national legislature). A native of Kitamoto, Saitama and graduate of Waseda University, he was elected for the first time in 2000.

• 政治家情報 〜大島 敦〜 (in Japanese). JANJAN. Archived from the original on 3 December 2007. Retrieved 20 October 2007.

• Official website in Japanese.